I mean, surely anyone who knows anything about blockchains would be aware that the long-term plans, even among traditionalists, would involve an ecosystem of interacting chains. And then presumably folks with some level of technical understanding realize that even a singular ecosystem's overly naive. I doubt few people actually believe in Bitcoin-maximalism, outside of memetic-humor. ...right?
Sorry, I'm still confused about junk like flat-Earthers. I mean, I've known flat-Earthers who were straight-up committed trolls; they were committed to the bit and would actingly-angrily denounce the round-Earth conspiracy, but they most definitely didn't actually believe that Earth was flat. But.. other folks.. it was harder to tell; were they even more committed, or did they actually believe that Earth was flat? Anyway, a lot of blockchain-stuff's similar -- I get that a lot of folks are trolling, but are there really true-believers who're legitimately sincere?
You may not have any interest in fixing the world but some people do.
Bitcoin takes energy. You can't use that energy for two things at once. You can't mine Bitcoin and Ethereum at the same time. The market for mining one squeezes out the other. A blockchain is only as secure as the game theory backing it.