I honestly can’t answer you, I don’t know anything about the game besides seeing it everywhere for years. Stuff like: How in your face is advertising? Do season even add anything besides these packs? Are they missable? The only thing I can say for sure: I dislike how they present multiple bundles with varying amounts of DLC on their steam page. Without prior knowledge I’d have to go through everything and check if I’d be missing out on some actual DLC content and I’d assume there are people buying an actually reasonably priced game for over a 100 bucks because they want all DLC assuming it’s real content. Sure, that’s on them not checking, but also kinda on the developer naming it stuff like “Deluxe” or “Master” Edition instead of “All Cosmetics Edition” or something among those lines.
Regardless, even if it is an genuine exception, they add massive content updates and don’t push these packs at all. Do they even make a profit then? Massively successful games like DRG, Terraria or Stardew Valley can do whatever they want - they have funded themselves more or less for life already and probably would still sell anyways. Normal service games need to turn a profit with their updates which still means either having a subscription or predatory mtx.