A Frankenstein of everything wrong with modern AAA gaming - an unimaginative and cluttered UI better suited to a streaming app, no immersion or atmosphere, trying consistently to sell me stuff, reeks of Fortnight but with a realistic art style, and a short gameplay loop best suited for mouthbreathers. Is it fun? Sure, when you jump on with your mates, but fun is a low bar to set for a game.
I only tried it because it's on Gamepass. Haven't played a CoD in almost 10 years, I really know why now.