Absolutely. I also believe there may be something even stronger than mere tendencies to discover in sociotypes if we look at traits a bit differently, more from Model A standpoint.
I'll follow the maths example. People who are just starting out with socionics often say things like: "I don't believe that I suffer from PoLR Ti. I study informatics.", which we all know is not the right approach but with time I've learned that it's worth it to dig deeper. The connection between - in this case - Tx and science is not to be discarded; it's there. And what we've come to consider a deviation from that ceases to exist at a closer look. Weak Tx always shows, just in many different ways, depending on various factors.
I myself excelled at maths at times. In high school I chose maths for my finals and graduated with honors, collected a prize. I passed the entrance examination (physics) for a tech university, again with a very good score. And so the nightmare began. I hated it there. Take the diversity of school subjects away and the endless hours of maths alone were torture. It felt dry, I lost all interest in it and for whatever the reason, suddenly maths became
difficult. I couldn't bring myself to even open a notebook, so of course it got even worse. I did pass the first year somehow but decided to change specialization. I chose something distinctly more abstract while still science, so it got better (Ne ego) but in the end not by much. I withstood four more years of that and eventually I got seriously ill. Spent half a year in surgeries, on various medical examinations and consultations. It turned out I had extremely high level of auto aggressive antibodies in my blood and was checked for all the worst diseases, one by one. Some doctors maintain it all probably began with my psyche.
Today it looks like I'm going to get out of this, relatively easy, though I'll probably carry with eyesight disorders.
I'm not planning to finish my degree. No way.
Thing is, I'm good at maths, always have been. I
enjoy it, on occasion. But my heart was never really in it. And I don't believe it comes as naturally to me as I imagine to some people of logical types it does, either. I've had my moments of brilliance when confronted with mathematical or logical problems but I guess they're mostly Ne related. I have a strong Ne subtype and that enhances my
role significantly. Last but not least, I was a really smart kid. But super-ego will be super-ego and weak functions will be weak.
Of course, there are many people who overcome this. IEI IT specialists or SEI mathematicians. But that's what I think it is, at least partly - overcoming. And I'm quite sure those people stumble upon similar problems, to some extent.
So I'd say that whereas there are a lot of things that need to be factor in reasonably connecting traits to sociotypes, the connections exist. Always and every time.
As for the factors - subtype would be among most important. Parental influence, especially if nobody in the family values one or any of the two aspects from the ego block of a person typed. Intelligence and other general abilities - I find it really important to keep in mind that strength of a function needs to be evaluated in comparison to other functions in the same person rather than the same function in others. For example, an intuitive may be much better at sports than a person of sensory type, just as I'm better at maths than some people of logical types, and so on, but their Nx will be even more capable than that.
To post it or not to post... hm.