I think another key weakness if they don't support 802.3af or 802.3at POE power. It requires their injectors or special POE switches. The Pro camera I think lists 802.3af power, but when you read the literature it looks like it requires an adapter.
According to another forum I've seen, an installer mentioned how they seemed to have supported ONVIF and RTSP in previous versions, but with new firmware updates they seemed to "lock those features out", in his words. So they seem to want to limit compatibiltiy to their own cameras/nvrs.
I still like the wireless gear, but the cameras I think they will mostly sell to non-security types who are already Uniquiti fans. And there's a lot of them, so they probably will sell alot.