So, regarding the title: "support" is used euphemistically here to mean "permit" (an editorialization not present in the article). This euphemism is usually used by companies who want to de-emphasize their exertion of control over you - Apple is particularly fond of it (as when they say they do not "support" downgrading iOS - there is no technical restriction, they just don't want you to). Here, though, it seems to be to de-emphasize the "rule breaking" nature of this hack - the original title is far more blunt: "Bypassing hotspot limits on iOS".
It is interesting that this hack is entirely about defeating a conspiracy between Apple and a network operator to control what goes on beyond the netop's endpoint, and it does this - barely - by exploiting the fact that an iOS device is still a general purpose computer despite Apple's best efforts:
> After an hour or two of constantly running sshd on iSH, your phone gets warm and toasty. This is because iSH emulates all of its commands—-but for good reason, App Store approval!
This is not a good reason.
