The thing they're trying to market is a lot of people genuinely don't know what to say at certain times. Instead of replacing an emotional activity, its meant to be used when you literally can't do it but need to.
Obviously that's not the way it should go, but it is an actual problem they're trying to talk to. I had a friend feel real down in high school because his parents didn't attend an award ceremony, and I couldn't help cause I just didn't know what to say. AI could've hypothetically given me a rough draft or inspiration. Obviously I wouldn't have just texted what the AI said, but it could've gotten me past the part I was stuck on.
In my experience, AI is shit at that anyway. 9 times out of 10 when I ask it anything even remotely deep it restates the problem like "I'm sorry to hear your parents couldn't make it". AI can't really solve the problem google wants it to, and I'm honestly glad it can't.
Garry's mod uses Valve assets and is published by Valve. Of particular note, it has half life assets in it.
The skibidi toilet series was made with Source Filmmaker, a video editing software published by Valve, which allows people to use the Source engine, the game engine that half-life 2 used. As SFM was made by Valve, they allowed a bunch of half-life assets to be free in SFM. the original toilet head is an asset from Half-life 2, Male_07, which Garry's Mod has access to, given it is a valve release and can use valve models.
They C&D'd Valve for using Valve assets in a Valve game.