Yeah, their reasoning is solid (easy to abuse) but it is still a very useful feature.
AFAIK, at the moment your choices are AirVPN and ProtonVPN. AirVPN has static port forwarding and Proton has UPNP port forwarding.
Currently using airVPN, but ye gods, their eddie client is atrocious on linux. I wind up using wg / nmcli, but then have to block traffic going outside of the vpn with iptable rules because it leaks for some reason.
I miss mullvad dearly, and I might try proton after my 3y sub is up.
private internet access has port forwarding too