I didn’t realize Whannell clarified a little with what happened with the M&G, and I don’t think this was shared here so…
Whannell described the design reveal as a "debacle", as Universal did it without discussing it with him or contacting the film's make-up artist, Arjen Tuiten; he unsuccessfully tried stopping it by calling Jason Blum and later retorted that it was "like judging the Freddy Krueger makeup by a costume at Spirit Halloween. You know what I mean? There's a lot more to it. I'm like, no, no, no."
He debates original ideas VS. existing IPs.
screenrant.com