This is totally acceptable and supported configuration. It really depends on the requirements for the network, and some devices while they are more of the IoT variety do still rely on two-way communication (e.g. Sonos).
What if a user didn’t have a router capable of VLANs, but wanted to still leverage segregation? That’s one of the great features of AltaPass, you can have different levels of access within the same network, whether flat, or using VLANs.