Seems like an advert for their Product SPR: Secure Programmable Routers. I don't know their system, so don't see the rest of my comment as a critique.
If your systems supports VLAN tagging per SSID there is an option to make the single Router setup more secure. This will most likely only apply to companies and home labs. For example at my company we have Zyxel gear were we can tag WLAN connections with a VLAN based on the SSID.
Beware, simplified description ahead. We have a Guest SSID. All connections from this SSID get tagged with a dedicated VLAN on the Access Points. The traffic is then routed to our Firewall and from there to the internet. All switches in between use the VLAN to prevent Guest connections from reaching any other devices on the LAN.
If your systems supports VLAN tagging per SSID there is an option to make the single Router setup more secure. This will most likely only apply to companies and home labs. For example at my company we have Zyxel gear were we can tag WLAN connections with a VLAN based on the SSID.
Beware, simplified description ahead. We have a Guest SSID. All connections from this SSID get tagged with a dedicated VLAN on the Access Points. The traffic is then routed to our Firewall and from there to the internet. All switches in between use the VLAN to prevent Guest connections from reaching any other devices on the LAN.