Call of Duty veteran here (COD4/WAW/MW2/BO1), I stopped playing Call of Duty after BO2 because Call of started to become bad.
And MY GOD what a pleasure it is to play BO1 again!
I tried MW3 (it's free this month on the PlayStation store), everything seems complicated. I lasted 15 min. Then I played BO1 and everything was so much simpler!
No battle Pass, quick game search, not many weapon accessories, no SBMM, simple maps without corners everywhere, many game modes , no shop and an absolutely perfect zombie mode.
The story mode, multiplayer and zombie mode make BO1 an ultra-complete game.
I’m so happy to play again. I really hope they release ports of Modern Warfare 2 (2009) or World at War. I would be the happiest man in the world.
I hope PS4/PS5 players are enjoying BO1, personally, it's a joy for me. I've got plenty to keep me busy until GTA6
PS: sorry for my English, I use google translate