In a word? Yes.
Unfortunately, Si-doms have been (somewhat) unfairly connected to traditionalism and preservation of the past at all costs. While these things do tend to accompany certain Si-doms (and auxes, for that matter), since Si is a subjective dominant function, and all other subjective dominant functions are known for their “independence,” there is no reason to believe Si is not the same way.
The lineup seems to go this way, in a lot of people’s minds:
Ti: fiercely independent, thinker.
Fi: fiercely independent, do-not-tread-on-me feeler.
Ni: fiercely independent, strategic dreamer.
Si: past-preserving doormat.
To which I say, HUH?!
There is no reason a Si-dom can’t be as strong-willed, as independent, as individualistic, and as unique as any of the other introverts, and many of them are. Contrary to popular opinion, there are bohemian Si-doms, free spirited and outspoken Si-doms, Si-doms who love to travel, Si-doms who write epic “high fantasy” novels, liberal hippie Si-doms, and Si-doms who are not entirely resistant to change. The unknown frightens them a bit, but once they have a foundation with which to encounter the unknown, it is no longer unknown and no longer frightening.
For example, the concept of “tea.” If you have never gone to one before, you don’t know what it is, what is expected of you, what the food or games will be like… that is scary to a Si-dom, whose entire personality relies heavily on their dominant function… which is, in its barest essence, all about collecting information through personal experience and research. It has nothing to do with nostalgia. Nothing to do with preserving cultural traditions (unless the Si-dom happens to like them, and is introduced to them fairly early in their development). Nothing to do with conservationism. Nothing to do with earlier eras, although learning about them feeds a Si-doms love of knowledge. The greater the knowledge, the broader the worldview, the less is truly unknown (and therefore intimidating) and the healthier the Si-dom will be.
That is why so many Si-doms are bookworms, history buffs, English majors, etc., and why so many of them accumulate vast amounts of practical knowledge, in the form of history, in talking to other people, and even in reading novels. It’s not merely about their experiences, but also in taking an interest in other people’s experiences. More information = bigger worldview. The more they know, the more their Ne sees patterns, and the more accurate they are in reading between the lines, in anticipating impending events, and in foreseeing things… only unlike the Ni-doms, these predictions and knowings come from their stored up experiences and knowledge. (I know a Si-dom who has accurately predicted the outcome of the last two election cycles, down to percentages, but she is undeniably Si. It’s all knowledge-based.)
The obvious intuitive bias that dominates a lot of online forums and even creeps into the profiles is unfortunate, because they paint Si-users as dull, unimaginative, and preservers of past tradition at all costs. If an SJ grows up reading Tolkien, Lewis, Rowling, Martin, and other fantasy writers, why can’t they write fantasy? They will have a broad knowledge base and a vivid imagination to go with it. If an SJ grew up traveling constantly with his parents, meeting new people and having new experiences, he will want to travel… go to new places… to see new things… it’s in his blood. If an SJ is raised by free-thinking parents who encourage her to be and study strong women, she’ll be a feminist. 50’s housewife be damned! If a Si-dom wants a family, she’ll have one; if she doesn’t, she won’t. The wife and mother lifestyle isn’t mandatory, but many ISFJs choose it because of their love of people. They are naturally good mothers. But not all of them want to be mothers.
Hangups only come in the form of moral beliefs, certain ways of doing things, and preferences the SJ feels strongly about. This makes them no different from any other type. Many (but not all) Si-doms choose to value certain past experiences or items that mean something special to them, and may be resistant to anything that challenges a special memory or something valued in their childhood (like a beloved film), but the healthiest ones do not spend much time reflecting on or reliving the past, because it is merely a lock-box of experiences.
The stereotypes and the unfortunate fact that many of them are born out to extremes in entertainment, have caused many people to be mistyped because they feel they are too creative, imaginative, idealistic, romantic, or able to predict things to be a Si-dom or aux. They’re simply a Si-dom who is creative, imaginative, idealistic, romantic, etc.
It is true that the longer a Si-dom does something a certain way, the harder it is to break out of that habit, but any sensible person will see if something is not working that there is a better way to do it, even if it means embracing the unknown. After all, if you take one step forward, it’s no longer unknown.