This is a false dichotomy. Nothing in "crunch" impacts what TTRPGs do that CRPGs can't. I think the "why don't you just play a CRPG" underscores a lack of understanding of what crunch can bring to play, based on a p[reference for lighter systems.
As to the idea of "why bother if the VTT is going to do the math" folks -- have you never played a complex CRPG or ARPG? The computer handles all the math there, too, but the fun some players have is looking at the granularity of the subsystems and leveraging them toward "builds" or whatever. Imagine being able to have loot drops in D&D that have the same level of detail while still remaining meaningful, because the systems for both generating and implementing the loot are handled by the VTT rather than the GM. The player still decides between the drops.
I find it a little ditressing that even after all this time people bring out the argument that complexity is somehow related to whether the game is a "real roleplaying game" or no. I am afraid someone will soon post ROLLplaying as if it were 1993...