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.
There are some regions that restrict gambling platforms and the only way we can jump the restrictions is to keep using VPN.
There are gambling platforms that would not ban your account if you are using VPN especially in regions that are not too strict like that.
Many of these gambling platforms want to make money and they need high flow of traffic and the only way is to accept VPN except the user is carrying dubious and suspicious transactions. Apart from this, using VPN is no an issue in some gambling platforms.
It should not be an issue if you are gambling with a casino that has already keep a good reputation and has been running their business for awhile. Some may see it as a risk that their account might get associated to something or would violate a TOS. This topic is good as we discussed the possibilities or consequences of using a VPN to hide our IP, and as what I had observed, there are some stating it's not advisable but I haven't really read a lot information where users accounts get compromised by simply using a VPN.