The social climate will change. But the issues will remain until dealt with.
That's my point.
If D&D wants to copy LOTR orcs but divorce them from the lore reasons why they act the way they do, it wont make sense.
It's not social climate that made the issue. The issue with orcs and half orcs was always stupid. The technology just gave the ability to openly said "The lore for orcs is bad", "The default lore, look, and logistics of drow is just utterly dumb" or "The inspiration character for barbarian is smart but the D&D barbarian is an idiot".
Instead of your critic being only heard by your table and friend, the whole world can hear you. And if the issue is glaring,it won't be just you.
And 5e was successful. So it attracted more new people. New people without nostalgia goggles but with more tech savvy.
It's not a climate problem.
There have been "Drow is dumb and kinda racist and sexist" topics since AOL disc days of the 90s.