Money is the most valuable public good in the world. There is no problem as great as the problem that sound, stateless money solves. No, it should not be used for other things, the same as TCP/IP shouldn’t be inundated with spam connections that aren’t actually meant to do anything or send any information. If this was the norm then TCP/IP simply wouldn’t be used for communication.
If bitcoin isn’t strictly defined with rules for it to work as money, then it won’t work as money.
It’s strict limits ENABLE it to be permissionless freedom money. We can’t just say “but free markets” and drop any restrictions that some people wish were gone.