First of all, why do we care what Shitcoiners do over here? They will definitely come and there's nothing we can do against it.
Secondly, "they can't do that on Nostr" - how do you mean this? Anyone can do anything on Nostr.
Lastly: I am using Nostr for over a year and I don't even know how to make a Lightning payment. It's not needed at all to use Nostr.
Also, couldn't they just use the Nostr protocol to write their own clients that integrates their shitcoins?