Exactly what I explained in the post you replied to. Nuance in a discussion like this is understanding that when someone says "XXX was an acceptable term not that long ago" they aren't giving their seal of approval for the use of that term at that place and time. They are pretty
obviously implying that the term was normalized and generally accepted by a large part of society. Shoot, they even said in their post that it wasn't okay but it was a normal part of language not that long ago.
If
@Al_4_State used that term back in the 90s/00s then I would venture to guess that much like myself, they are ashamed of that behavior and by no means intend to diminish how distasteful and not okay it was for people like ourselves to use it. Their point is that society accepted, and normalized such hate speech so it isn't terribly surprising that someone like Bob Huggins still uses that language today despite how distasteful and wrong it is.
My point is, go after those who think that using that word isn't a big deal. But for the love of everything good in this world, progressively minded folks need to stop forming circular firing squads.