The fact that's needed at all is the problem. Developers need to stop making monolithic structures that have access to everything ever and putting it on the user to maintain to maintain a VPN network for security.
There's no reason I should not be able to just use an nginx reverse proxy for remote access to my jellyfin and have that be safe. It should at worst give people a copy of my media if there's a security issue.
Personally I went out of my way to make this be the case, i have my instance locked into an unprivileged lxc whitelist only on syscalls which took a while to figure out the minimum needed for function but I got there. The host System is using the hardened kernel from Upstream and a series of sysctl lockdowns for example P Trace is not allowed even if you are the root user.
So I do indeed just nginx reverse proxy my instant because the worst case scenario even if they got complete shell access to the system they would be locked into an unprivileged container that had no access to any files other than my media files but the fact that I have to go to this level is already ridiculous