VMs should have VirtIO RNG set up so there is a high quality entropy source at boot time, provided by the host system.

Should, yes. Will, perhaps, but better be aware of the potential problem and check.

Just yesterday I encountered people complaining about a VM not connecting to a cloud service when they neglected to put their DNS server’s address in the config for the DHCP server used by that particular host. And a dysfunctional RNG is much more difficult to detect.