@thelittleiknow,
“and those Kohanim who approached the aron were undoubtedly oveir their issur. ”
You are correct that majority of Poskim were machmir, but who are you to say they were oiver an issue?
The Minchas Elozor says he would be meikil if not for it being hard to say that someone isn’t a tzadik, and that would lead to kohnim going everywhere.
The Chida in Pnei Dovid says that the Minhag is to be meikil.
Bpoel, in Chabad we are machmir like rov Poskim. However that doesn’t give you a right to say that those who weren’t were oiver. Are you greater than the Minchas Elozor or the Chida? Why try and look for aveiros by Yidden? Why not be matzdik and Dan lekaf zchus?