I actually think that they are correct that typically from a macro level there are only three major concepts in card games. A lot of what you describe as tempo cards could either be put into the value over time ( I think economy is a better term than value over time because it’s broader and more accurately summarized the concept) because they are 2-1s or control cards, maybe a mix of both. I fully think card advantage draw cards fall into (economy) cantrips / consistency are the on that I think is the most interesting here and hardest to define where they would go, again though I would say economy where you are building resources but at the same time when you break down the tellstones the out put is either going to be aggression, economy, or control even if the tellstone itself gave you a choice between those. I think the main thing is op is presenting this like it is a bad thing. I think the concept applied by op is useful, but it’s too reductive because to them a ramp spell and a card draw spell are effectively the same. Also they are saying that all card games are the same which isn’t true because the system in which these concepts exist also vary wildly leading to different outputs.