It's really weird claim that a number of people have made over the last 10 years, and I've never seen a shred of actual support for it.
Indeed, on the precise contrary, I've seen a ton of evidence that a lot of players get in D&D "lore-first", rather than because they think the rules are cool or something. People don't become obsessed with Critical Role despite the lore - it's a big part of why they do. Even before that, novels and games and so on, often interest people in D&D settings because of the settings and the lore, not because of the D&D rules.
I don't think everyone does - but I don't think anyone has made any kind of logical or supportable case that "kids today" or "new players" don't like lore. I would continue to suggest the contrary, based on the people I've seen wanting to play D&D. It's about the same proportion as ever.