Yes, registered black male Republicans in conservative states in the South and Midwest voted for Trump at higher numbers.

The parent comment noted that in some heavily black PA districts, there were few/no registered Republicans, and those few that were there presumably voted in person due to the GOP spending months trashtalking mail-in votes.

In-person results were tabulated on Tuesday. Under recent PA law, mail-in ballots couldn't be counted before Tuesday. As Democrats generally vote mail-in in higher numbers, this meant that the mail-in ballots would be overwhelmingly Democratic with few if any Republican ballots.

Per your link, 80% of black men supported Biden. Given that mail in ballots have tended to be in Biden's favor, in large part because Trump asked his supporters to vote in person, I don't think it's a stretch to see almost all mail in ballots from black areas going to Biden.

You’re moving the goalposts all over the place but sure, Trump/Republicans made some inroads with PoC in certain areas (Miami-dade, south Texas) and lost it elsewhere (Arizona) but your own links don’t describe it as “historic”:

> Eighty percent of Black men supported Joe Biden, down slightly from Hilary Clinton’s 82 percent