It's Hollywood, though. It's not Dark Harbor, or Knott's. It's not even Universal Orlando. The park itself is famous for giving people a glimpse into the studios where IPs are made. There's a certain intrinsic expectation that, hey, if people are going to the place "where movies are made," they're gonna want to see famous movie and TV IP represented in a way they can't get at other haunts. Even if it's repetitive, you're not gonna see Michael Myers or Leatherface walking around Knott's, in the same way you're not gonna see things like Jordan Peele's Us or Stranger Things or The Last of Us at Dark Harbor or Howl-O-Scream. It's not really clout chasing to use IPs/celebrities when the entire concept of Hollywood itself is built around... IPs and celebrities.
And even if TCM or Halloween is repetitive, it's weird seeing some act like their returns are some creative death knell for the event as if the event is only built on repeats. In the last five years, we've seen mazes given to a number of Universal monsters, we've gotten mazes for IPs like Stranger Things, Ghostbusters, Killer Klowns, Exorcist, The Haunting of Hill House, Us, The Last of Us, Chucky, Evil Dead, and on and on, and that's before originals like Monstruos or Scarecrow. Have some of those IPs been reused since? Sure, but even when Michael or Leatherface are "back again," they're surrounded by stuff that hasn't been done before (or, if it has, it's at least relatively new, like the difference between ST and ST4, barring some exceptions like Klowns).
Last time we got Leatherface/TCM, the event featured Hill House, The Purge, the Bride of Frankenstein, The Exorcist, Pandora's Box, and TWD, with Michael Myers there as well. This year, none of those IPs or originals are going to be there (unless Bride makes an appearance), with Leatherface surrounded by an entirely new lineup, and yet this entire conversation feels like it's been derailed by the idea that the event as a whole this year is just another retread simply because TCM is being used again, all before a single thing has actually even been confirmed for the event.