It’s all good 
Getting frustrated is just part of talking about stuff online, really. Thanks for being chill about it.
I have to admit, I don’t know that much about CoD’s content model. I tried out Modern Warfare but didn’t stick around. Usually that kind of model is set up to “let people who want to spend, spend” - the collectors and hardcore types, and the people to whom $1540 is not that much money, and so they spend it easily. So if you play the game a lot, you have the Battle Pass to get much of it for free. If you have kids or not that much time, you can pay to get it faster.
Since you still have the campaign, MP modes, Zombies, etc. then you still get the “product you paid for”, there’s just this additional layer that expands on the “monetization opportunities” so they can keep making money from customers. (That’s something that every dev wants to do, whether it’s through merch, DLC, side content like novelizations, etc. Indie devs generally don’t make enough to survive on game revenue alone.)
Now, I personally don’t like the model that CoD uses, and I don’t like playing games with those kinds of models. I prefer models like Hitman and R6:Siege, where I can buy seasonal content and support the devs that do something unique, and something that speaks to me. I really like surreal twists on action/strategy games, and I really haven’t seen many. For me, this Season of Sin stuff is worth paying for just based on the fresh approach.
But honestly, yeah, there are predatory practices out there. I get not wanting to give IOI the benefit of the doubt just based on this announcement. I don’t agree that their actions so far have been predatory, though, and I think that their strategy so far has shown a desire to be fair to the customers and their devoted fans, even if it isn’t perfect.