If we are to even consider the replies on this thread on recommendations for the platforms that accept the use of VPN, I don't think there are suggestions made and if any at all, they are not many, gambling platforms don't usually demand or take in the use of VPN for their website, but Incase we see some that allows for that, maybe they are just new in the business or doesn't have enough resources to employ for the measures that take care on that.
Well, you may be wrong with some facts because many casinos are allowing VPNs, you can search for that. Except that, almost all, if not, all casinos advertising here are always saying that double accounts are issues, and since VPNs could cause the mistake for the double account through the issuing of IP which is often the clash with the use of the same VPN, it is now popular here as though it is a taboo, but it is not like that elsewhere. Even if you ask from the support of some casinos, they will tell you it is allowed, so you should not confuse people with this. Nonetheless, I advise people to be very careful about the use of VPN so that it will not put them in trouble. The acceptance by casinos at times is like a "Greek gift," so we have to do away with it if possible even if they claim they accept it.