Its both low quality code and massive energy costs. Its a loose loose situation. If AI disappeared tomorrow, nothing would change, besides tech bros actually have to do a honest days work.

Have done something similar, you’ll discover the joy of have no internet while you do server maintenance, upgrades or disaster recovery and worst case, hardware failures.

Having internet and filesharing on one nic means internet will suffer while the nic is saturated.

Ensure your other VMs are adequately delayed at initial boot, as that can cause weird things that need DHCP to be available

Otherwise I never had issue running the router as a VM.