Though I do not agree fully with you that gameplay is just now having better cards only as I am still able to defeat max cards with my level 5 rare summoner and sometime unexpectedly lost match to level 2or 3 summoner also.

Few cards are overpowered and it is correct.

I will likely fully opt-out of the game in case there is another hype cycle

May be same I am thinking and I am disappointed how they are selling multiple license to a single node and calling it decentralization.
Again, VOUCHER need strong usecase along with SPS, but they are dumping more VOUCHER to market as a payment for running the Node.