I agree we’d all be better off not judged on our younger attempts at “edginess” and stuff we said while figuring out who we are in our teens. But at a certain point we have to accept that posting anything online anywhere is _publishing_ and if you _published_ a racist letter to the editor at 19, instead of said something offensive at a party, there is a different judgement there & it’s justified.
I do think in time the answer “I’ve grown a lot since that time and regret those tweets” is going to become more acceptable & people will be judged more on recent stuff they say and do.