You aren't supposed to use VPN to hide your citizenship, (which seems to be ongoing trend, and i assuming you are referring to that with "your jurisdiction"). That's against the terms and conditions section 3.3.
If this intention of VPN usage is to hide real nationality and geolocation that are restricted by the platform, it contains very big risk of account termination later. So at the start, don't use VPN for this shady intention is better.
If people who are from restricted areas, it's best to move on and find another platform, rather than try to do unacceptable VNP usage to cheat the platform, break its ToS.
I don't say that user did it for the purpose, but using VPN for this illustrative example is so risky.
You can use VPN for other purposes though.
But even then, i wouldn't count on other players not using those recycled IPs of some VPN services and not getting flagged for using 2 accounts.
Using VPN always contains risk of having troubles with the platform and your account as well as your fund. If you are not cheater, you can prove it and the platform never judge your account as fraud one as they don't only base on VPN usage and IP addresses for conclusion. There are more factors for their investigation before they can come to a conclusion like this, and take serious action with your account. So mostly if casinos are against you, red flag your account, it's nothing good, and chance to appeal successfully is very small.