Questions about AP7/switches

It seems the biggest benefit for these is the VqLAN/microsegmentation abilities with connected devices (in addition to consolidated management and topology).

My initial understanding was a FWG + third party AP/switch already has VqLAN/microsegmentation abilities—is this wrong and in fact those are unlocked with the AP7/FW switch?

Related question: I’m designing a home network from scratch with ~30 Ethernet devices/drops. Do I need 3-4 Firewalla switches to get the benefits or can one feed into a cheaper third party managed non-PoE to save money where I don’t need PoE? I’m assuming the answer is security costs money, but maybe there is a point where it’s reasonable to compromise?