Let's say you bought a deck with gems, it's kinda ridiculous to even think you can't actually have the same amount of gems (or maybe even more) after 4-5 months when the deck you bought finally gets a nerf (if such thing actually happens).
I think some people also fail to realize that a card/deck becoming obsolete doesn't negate the fact you got months of use out of it beforehand. You got your value already. You wouldn't be complaining if your deck got simply out-powercrept instead.
Notice how it's perfectly fine to keep venting rage toward the game and Konami, calling it "cash grabber", etc, etc.
What's not acceptable by any means it's actually liking this game. There's almost some kind of EXTORTION against fur hire users, wtf.
Many people are starting to think there's some kind of 'boycott', yes, just read the comments on YouTube/facebook, plenty of them are just hateful.