There are 2 kinds of distributions. Ones that are on customization side and those on stability side.
For example Debian, Fedora, and arguably Arch are on stability side. They are intended for people that want things to work predictably and software to be packaged and shipped as the developer intended it. Customization or lack of it is up to the user.
Distributions like Manjaro, Zorin OS, Elementary OS, LMDE or even Linux XP are have a given goal to a particular customization. Either a set of tweaks, a particular look or even their own desktop environment or set of software they develop themselves.
This means that the first kind would have the most boring update, as they just ship new and correctly integrated software. While the second kind would provide very nice customisations or patching of their own to their environment.
While not the best thjbg for customers, it helps them reduce fraud and keep the service acceptable.
Since vultr network has a hood reputation, they could be abused to send spam. Having crypto payment only would not prevent them to detect repeat abusers. With a verified payment method they can ID who me they are providing service for.
In an absence of such limitation, abusers can simply create a new email and wallet then get back to abusing.