on the flip side, a wifi 7 access point, firewall, NAS, server, and network switch in this performance range are going to cost a bit more by my reckoning. I do see your point about repairability and reliability, one power supply for all of it could be problematic.
As far as security, couldn't most of what you mentioned be effectively achieved in software if implemented correctly? Looking at the company website, that seems to be their primary focus area.