Have you played ACC on a controller? Because I have - and it's a huge amount of work to get the settings dialled in so that you can actually be relatively competitive. And even then it's a huge gap to anyone on a wheel! Tyre wear has always been a problem too, it's so much more difficult to be smooth on exit with a controller and you end up with much worse rear tyres (particularly rears more than fronts) compared to anyone on a wheel.
It's not a 'pick up and play' game like the F1 games are - and I much prefer GT3 cars for racing as well. I love F1 but for actual racing, I think GT3 is the most enjoyable. Hell, I even made a post 5 years ago before they released ACC on console asking for Kunos to consider some feedback about how it could improve the game for controller users. That was after 50 hours of playtime on a controller - and I'd since put another 100 hours in, also on a controller.
I do feel like you're missing the point on what the F1 games are designed for though.
They aren't trying to appeal to the people who play iRacing or ACC. I'm sure there's a decent amount of overlap between people playing GT7 on PS5 who will probably also get the F1 games - but consider that the F1 games are on all platforms and GT7 is only on PlayStation you'll likely end up with a similar total playerbase, if not more on the F1 games. Especially now it has full crossplay!
I think the F1 games should be better - but I think it's wrong to compare them to sims.