Earlier quoted context omitted.
What you just described is an example of imposter syndrome (at least the way I think of it). The comment I was responding to was not. If the lawyer feels like an imposter in her current role, that's different from feeling like an imposter in a role you don't even have. This is the distinction I'm making, and why I think the label doesn't fit. Should I feel like I have imposter syndrome because I'd be uncomfortable as…
If someone doesn't think of themself as a "real artist" even though they really do make real art, they might not seek a paid job that uses their art skills, as a UI designer or otherwise. I think that could reasonably be described as "imposter syndrome" by a layperson, but I'm not going to haggle over whether or not it meets a formal definition.
I'm not trying to haggle, but we can't have a meaningful conversation about a term if you aren't going to define it.
Agree to disagree, I guess.