Yes, it is still possible.
I've a few dedicated machines with Proxmox 8 to host several VM's / LXC's with the default ip or different ipv4 / ipv6 ips (failover).
It is really flexible and allows you to host, for example, a WebhostVM, several GameServerVM's, etc using only one dedicated machine.
In case someone is interested in this kind of configuration, you can add me on discord