>>92541408i wouldn't say so, to take a silly question far too seriously, i would say:
they usually have a special interest they know far too much about and tend to be oblivious about how the world works in general
the "i used to be an all As student but then i became a vtuber and turned silly" trope is common
one field they might be better than other chuubas at is linguistics/phonetics
if they do choose to study it you get Nanamona/Dollie who will fluently and effortlessly speak 3 or more languages if they don't you get Essie/Lisa who sound great singing JP/chaos but don't necessarily understand the language enough to speak it
in the middle of that spectrum you have Fuwamu/Mee/NEUN who actually could just stream in English without the typical katakana-eigo accent Japanese have when talking in EN
curiosity is another common sheep trait that usually indicates intelligence, tho that's often coming from a place of wanting to not be left out
they tend to be very creative and prone to delulu confabulating/RP
all of of those characteristics are usually associated with children more than adults
they might come across as "dumb" in the same way a curious 8yo who is both a sponge for languages and an dinosaur encyclopedia might