When I say "MCU-lite" I'm speaking in reference to how closely they're adhering to a top-down directive and playing it safe for the masses. Their goal now is to just make people laugh and feel good, and send people home happy without actually giving any thought to what they just saw or feel challenged in any way. There's not much depth to these new DCEU movies.
Not saying all superhero movies need to be complex philosophical think pieces, but you look at Civil War, Infinity War, Logan, Spider-Verse, Deadpool 1, Black Panther, possibly this new Joker movie, those are movies which are pushing the genre forward in interesting and thoughtful directions. Neither Shazam nor Aquaman told a new story, made any interesting artistic choices that we haven't already seen, or took any risks. They're just entertaining at best and send you home feeling good (and IMO, the "average" Marvel movies i.e. Captain Marvel, Ant-Man & Wasp still do that better). Again, nothing wrong with that, but the DCEU under Snyder was a lot more ambitious and tbh I appreciated that