"Deemed" in particular doesn't require any sort of reasoning or argument for the company to make any decision it likes. And "appropriate" is not a synonym for "necessary".
"Why did you sell my data?" "We deemed it appropriate for the purposes of providing the Services to you."
What's your legal refutation to this under US law?
(In the EU, this whole clause would possibly be unenforceable from the start, but I know a lot less about EU law.)
No, I didn't, but you again missed the full context. Neither of those terms can be considered in isolation, so again:
> You hereby grant to Vultr a non-exclusive [...] in any way that Vultr deems appropriate [...] for purposes of providing the Services to you
So unless it's for the purpose of providing you the service, it doesn't matter what Vultr "deems" appropriate.
Feel free to check this with a lawyer if you feel unsure.