I will argue that each of these examples you've listed has a clearer intent listed. "for purposes of providing the Services" versus "solely to provide and support the Software".

None of them go so far as to say: "and otherwise use and commercialize the User Content in any way that Vultr deems appropriate"

Again, I'm not a lawyer, nor looking to become one, so anything that seems unusual, should be taken with caution in order to protect myself and my IP. I've seen what companies have done to independent developers, and I don't want to suffer a similar fate, only because I couldn't interpret TOS accurately.