Does OVH allow porn website on its VPS ?
Here is what we get when we search about the answer on their frequently asked questions page :
As long as the content is legal and the website complies with the rules of an adult website, e.g. access to minors is prohibited, you can absolutely host adult content on your VPS.
Additionally, OVH informs the customer of their responsibility for their website content when they accept the OVH VPS contract (when they place their order).
So, the answer is yes for the US part of OVH.