I do understand that and appreciate that you clarified it, but I was mostly just joking around - saying I'm good at masking was meant to be self deprecating and facetious. Didn't mean to imply masking and imposter syndrome are the same thing at all.

That said, in my experience trying to mask larger symptoms than playing with fingers (for example time blindness, not able to focus on command) in a work place and in grad school helped contribute to a feeling of being an imposter and feeling the shame of not deserving anything I had. I no longer struggle with this, and I don't actually think being ADHD made me a real imposter, just that a part of me used to feel that I didn't deserve anything I achieved because I thought if I was recognised as a weirdo others would no longer respect me or think I knew what I was doing. I got this impression from experiencing being screamed at and having my competence devalued when I made very ADHD mistakes (forgetfulness, lateness, etc) and I worked more on masking than on solutions/strategies because at the time I was undiagnosed and not in therapy.

Masking and imposter syndrome are absolutely not at the same thing, and your explanation is completely accurate, but for me they have been related in a complex way. Especially because I struggled to understand how I could be good at one thing and yet bad at a different thing that everyone expected me to be good at. Hope that makes sense.