Not at the expense of the game's economy. Axie infinity, plant vs undead, cryptoblades, etc. etc... all those games got a huge popularity increase in a very short amount of time and all those economies crashed.. splinterlands is a great game, and they have a good economy going. I only own a couple of cards and I'm at bronze but I rent to reach to silver, so I don't see the big deal. New players with zero owned nfts can reach to silver 3 rating and rent for the end of season, thats how I started.