So if chazal advocated for physical mussar in such terms, we would still do it nowadays. But they don’t. It’s in rishonim, who also do not give it any unconditional application. Therefore we apply conditions to those shitos – that’s besides the fact that the consensus of poskim appears to not be in accordance to those shitos.
So to recap:
Thus discussion, though a weak attempt at displaying my supposed hypocrisy, has nothing to do with chazal at all, as we are talking about not unqualified statements of rishonim.
Moreover, the halacha does not follow those rishonim.