I figured the answer was something like that. For the record, I consider most of the invalid legal reasons to be valid reasons, too.

Undisciplined

There are valid legal uses for them (logging into work networks, etc), but there are regimes that are absolutely going after them, like Russia and more recently 

news

Pornhub ban now covers more than a third of US states

k00b

There are valid legal uses for them (logging into work networks, etc), but there are regimes that are absolutely going after them, like Russia and more recently [India](https://www.msn.com/en-us/money/other/cloudflare-s-vpn-app-among-half-dozen-pulled-from-indian-app-stores/ar-AA1wT8sn)