Well yourself answer your question in The beggening.
The problem of bad monatization is that, they cant sell so many cosmetic so they need to try to sell New kegs.
So since everyone has already a full set of cards, every New card should be a "must have card" so People will buy kegs to have it.
But, in fact, veteran players has so many scraps that we dont need to buy it, but problably New players will have to
Good point about new players.
Although, in my defence, there have been new packs being released for almost the whole time I've been playing - so, I still stand by some of what I said, I never bought with cash any of the new card kegs ever, I played until I had enough rewards to either exchange ore for kegs or craft with scraps. I guess I've never had FOMO and have been prepared to learn the game rather than just get the latest card(s). For example, of all the cursed toad cards, the only one I'm using is travelling priestess.