The DCEU's variety is not a recent thing. WW and Suicide Squad no matter what you think of them, were not like BvS or Man of Steel.I'm not sure what this reply (and replies like these) is supposed to mean. Yes, the MCU is said to have variety, whether you don't think it does or not. So does the DCEU, but that just started recently.
The MCU also has high box office and cultural impact, and a HUGE fanbase. Implying it doesn't at this point just feels like ignoring reality or being negative for no reason. The fact that Avengers (2012) is a very memorable movie, Guardians' soundtrack (and the movie itself) was very popular, Black Panther is one of the most talked about, acclaimed and referenced popular film this decade, and both Infinity War and Endgame turned Thanos into a movie villain icon and meme proves it has cultural impact right now (which will likely last).
A lot of popular film culture today is dictated by the MCU, as "Marvel movies" are referenced a lot in other forms of entertainment and regular talk, many movies have been said to borrow from their formula (including the DCEU), and many modern film catchphrases come from MCU films ("I am Groot," "Wakanda Forever," "I am Iron Man," many Thanos quotes).
Kids may be doing Fortnite dances, and they're also dressing up or cosplaying as MCU characters every year for Halloween or any costume party. After 11 years, they're still going to see these movies again and again, and we've seen once highflying franchises crap out even after a shorter period of time (Transformers), so that is a sign of impact. We've seen a few of the characters reach and connect with people on a more personal level, leading them to be discussed in think-pieces, or the films themselves do that. And lots of kids say those catchphrases. There's no point denying that, or any of the above. I'm no big DCEU fan or whatever, but I wouldn't go around pretending like there aren't people that watch these movies and like them, or that so far it isn't a commercial success. Obviously none of those things are true.