I've noticed that as well. Throwing in pop culture references and current slang rather than dialog of the relevant society, station, or time period.

Marvel movies made it quite obvious over their decade long run. It was particularly jarring for Thor and Loki's dialog. They started as regal characters, rulers of a planet, and they spoke like it. Over time, both of those characters started speaking like teenagers, their dialog consisted of internet memes strung together rather than the developed characters they started as.

That seems to be a feature of culture generally these days. People just quip memes and cultural references back and forth to one another rather than actually converse. I've caught myself doing it, and try to consciously avoid it, at least when having a meaningful conversation. To some extent that's just how communication and the conveyance of ideas works, but it's definitely a crutch and not very creative. Especially if you're trying to write something new. I guess that's the difference between art and "content", another word I have come to despise...