I just don't get the angst over this when there's been two Ghostbusters and four Stranger Things. It's fine. We're getting Sinners.
It's just been the same tired song and dance since at least 2019, when folks were complaining that the event was becoming "kid-friendly" due to properties like Stranger Things, Ghostbusters and even KKfOS. (Even though the year had properties such as Us and House of 1000 Corpses).
If someone personally didn't like an IP that was coming, it was deemed "kid-friendly", or "Not Horror", or griping that it was "attracting Teens." Stranger Things, Ghostbusters, The Weekend, FNaF, Wyatt Sicks, Chainsaw Man, and I don't doubt folks would've also done it to Billie Eilish if Covid didn't happen.
Thing is, these properties turned out fine. The event didn't get destroyed by their existence and the fears of the gripers turned out baseless. I'm not saying you have to like every property that comes to the event, but there's nothing wrong with just saying "Yanno, it's not for me." and moving on. Going the whole griping route with excuses that get proved wrong time and time again is why this is such a tired song and dance.
As others have pointed out, the general warning the event has always had is it's not recommended for children under 13. So the recommended starting age for the event is 13 and up. You know, Teens who are in Middle School. And that's why griping about something is for Teens/Middle Schoolers doesn't work. They're literally part of the audience for the event.
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To zero surprise, I'm down for this! I'm intrigued to see what they do for the lighting effects in the trees and what kind of setup they'll have for the Animal Actors courtyard, and there could be a lot of fun costumes in this zone.