I wouldn't say "full" of bugs, I could count the number of bugs I've encountered on one hand, but there are small bugs in the game. I also wouldn't say it's better than Project CARS, I think if you ignore the bugs in Pcars, which will sure be mostly fixed soon, it's lightyears ahead of anything else on console, but I do prefer sims. I totally agree with you that the weather is done really well, and it's a great platform to work from for future games this gen. For a first attempt this gen, building it up from scratch, they've done better than I expected.
As far as moaners, they'll moan no matter what. No game has what everyone wants. People moan about Pcars being too hard, or not having enough cars. People moan about Driveclub being too arcadey, even though it was always meant to be an arcade racer. People moan about PD not engaging with their fans, and then moan about things SMS says to fans, despite them being far more engaged with their fans than any other racing game dev. People are now moaning about F1 not being realistic enough for them, despite official F1 games never being realistic on consoles, and the fact that plenty of sims offer open wheel content, like the formula a on Pcars, or F1 mods in Rfactor and other PC sims.
I am a huge racing fan, and a huge F1 fan. Have been most of my life. I enjoy good arcade racing games almost as much as good sims, and I have probably played Driveclub more than Project CARS, despite Pcars being a better game imo, just because Driveclub is a lot of fun. I also spend a lot of time driving real cars fast, both on and off track (awesome roads where I live, out in the middle of nowhere, where you'll see maybe one car per 100km of road). I say let the moaners moan, they'll never be happy, and just enjoy trying to bring down those of us who actually enjoy a wide variety of racing games, and don't expect every game to be tailor made to us. We'll just enjoy the games while they moan online to anyone who'll listen. I know who'll be more happy in the end.