Agreed there and I recognize that bitcoiners will get scared off by that (me included).
Shitcoins will be an option to for shitcoiners, but not baked into the core system. Everything compelling about a vaporware ship will always be possible without ever touching ethereum.
Just as Bitcoin's blockchain is untainted by the fact that Shitcoins also use blockchains, your ethereum-free vaporware ship will be untainted by the shitcoinery of others.
This is the way voluntarism and exit work and it is a good thing.