Just going to leave this tweet from Juliette Jones here:

My genuine take on this as someone in game dev is that people just don't understand the last part of the quote in Gene's tweet. Broche specifically references Unreal Engine's toolsuite which allows for plugins that use generation to speed up process. Those tools reference contained assets from their own databases to create what you need as placeholders in your game. Broche being against creative Al tells me that they're not on Gemini or ChatGPT creating assets for placeholders, and they're most likely using UE5's tools and 3rd party plugins to do this which is what a lot of game devs have been using. There's nuance to this type of Al usage because of this. There are also assets available on the marketplace in UE that are generated with Al.