It’s a different kind of game that appeals to a different audience. More casual gamers I think. To ‘me’, they look like bad games but I can see how they can appeal to others.
I’d be the type that prefers to pay more, give up a bit of convenience, and stick with a console or a PC.
(When the choice of both is available).
We'll have to wait and see, but it's now a different world where a game on mobile doesn't mean that it's either a bad or a sub-par experience. The Apple TV, and the iPad Pro specifically, have beefy chips capable of running some really good games, without any sacrifice of making it a light version. And for whatever market reason, they are even more affordable than say on a PS4, Nintendo Switch, or Steam.
Take for example games such as Hitman Go, Dead Cells, Oxenfree, and Hyper Light Drifter (all of these for $5, except Dead Cells at $8 I believe). All of these indie games are well reviewed on PC or traditional console, but now also available on iOS, iPadOS (and sometimes tvOS) as a complete port including proper controller support in iOS 13. Hyper Light Drifter even runs at 120hz on an iPad Pro, arguably making it the better version vs the Nintendo Switch (60hz) if you're using a controller.
The examples are of course indie games - you won't be playing Call of Duty or Borderlands 3 on an Apple TV. And none of these games mentioned will be on Apple Arcade. But Apple Arcade are getting good indie developers to develop games (some in this thread have already mentioned their excitement at this). These indie developers can still release on other platforms, just not other mobile platforms, so good for them to not be completely locked in. Cautiously optimistic, but looks good so far.