This only shows the explosive growth Splinterlands has been experiencing through these past weeks and would expect to keep for some time. I'd guess most card games are going to be able to handle themselves almost completely on-chain, but Splinterlands is no longer just another card game and with the Lands expansion it will become even more complex.
More gameplay and players is simply put, more transactions, and although it's nice to wish for fully decentralized solutions, I believe this mix of centralized and decentralized is what's coming towards the industry.
Looking forward to how this all evolves, best of luck and see you in Praetoria!