@kravietz oh no, it's not due to anything related to a keyboard. The letter has a long, arduous history ever since its inception in the XVIII century. Educated people argued it encouraged "common" pronunciation of words, there were also problems with producing a printed type for it. It wasn't even considered a part of the alphabet until the XX century.
But basically, the letter has just become an unlucky subject of "holy wars" where it's too easy to have Opinions about how things should be.
This is interesting. I was always wondering why some (but statistically significant) English teachers in Russia pronounce words like "first" as ััััั or even ััััั. Might be unrelated but this ะต-ั confusion might be a hint.
@kravietz I think it's unrelated. This one is probably because "ั" is the closest we have phonetically to the shwa sound in "first", "girl", etc.