Survivor bias.

There are plenty of old episodes that would embarass modern Trek with being progressive since they didn’t make it an overt declaration (tell the audience), but showed why the bigoted view was bad. Whereas new Trek loves to just… declare the progressive view as good

Are you for real?

I love that this is a detail the set designer did expecting it to go unnoticed, that’s a level of passion for sure.

Granted, the slurs are now far more hurtful to you when you hear them due to their high quality.