Do you think the growth of diversity and inclusion in pop culture has made younger people more welcoming to diversity and inclusion? I certainly do.
Yes and no, but more yes. In general. There are a lot more female and minority heroes and role-models than there used to be. Unfortunately, I also think it's become politicized in the past decade and especially during the last five years.
I think there's more tolerance, but there's also more gray. Prior to around the turn of the millennium, you never would've seen shows about someone like Tony Soprano. At least not as the main lead.
In Star Trek itself, you wouldn't have had Burnham be the main character. It could be a black (Sisko) or a woman (Janeway), but it never would've been both. Not as the lead. Stamets and Culber would not have existed in Old Trek. And we definitely wouldn't be having a discussion about Georgiou. We also wouldn't have had an all-female landing party like we saw in "Project Daedalus", and we also wouldn't have had an episode like "That Hope Is You" with no white people at all (except aliens who were painted different colors).
In the superhero genre, they
never would've made a live-action movie about Wonder Woman in the '70s, '80s, or '90s like they did with Batman and Superman.
So I'd say it's gotten more better than it has worse. On balance. Still a long way to go. The extremist and hate groups have become more extreme, more hateful, and more prolific. Division is more visible.
I think we're made more aware of horrible things are now than we used to be, and at least there's more willingness to have those discussions. In real life: We're seeing police brutality, it's being talked about more. In fiction: We're seeing debates about characters doing horrible things that a show is on the side of.