Nobody has ever claimed you need them to finish the game.
The frequently spoken rule of thumb for micro-transactions being "not a big deal" is that they should be cosmetic only if the base game isn't free.
This game's micro-transactions are gameplay modifying items and in-game currency packs. That's a violation of the rule of thumb, so lots of us are saying it's a big deal.
I don't want this normalized. Because if it becomes the norm then full pay to win is much easier to normalize.
But even without that fear, it's absolutely just gross on its own.
They deserve all of the negative reviews and press they're getting for it.