Imo those claims about HE being a blockchain itself are ridiculous but I haven't all the technical knowledge needed to debate with Yabapmatt in that, I readed the post of Marky though and I tend to agree with him. HE may have the potential to become a blockchain someday but now its an embrionary proyect with no alternative nodes, no witnesses, no Pow, no PoS (or dependent of Hive in all these characteristics afaik).

About Splinterlands, I think that the blockchain tag could be attached to it. Store some data on the blockhain is what most blockchain games do usually anyways. I don't think that all of them have the neccessary data to be replicated on their blockchains, but idk, mostly I'm speculating here.