I would also like to have RSTP working on the Cam v3. I do not like being forced to use the Wyze app, especially since it does not seem to work on a private network (i.e. one that is not connected to the internet).
With respect to the single screw mounting issue though, I would say that it is going to depend upon how much wind you are getting and whether you have the articulating arm extended or if it is folded up. If it is folded up, there is less of a moment arm for the wind to act upon between the camera head and the camera base. Is the issue that you are concerned that the camera moving will be interpreted as motion detection? Easy way to check your installation for movement though would be to install in a test area to a secure base, set it for continuous record, and then use a leaf blower to blow towards the camera from various angles and distances. Even electric leaf blowers should be able to blow at enough of a wind velocity that it would simulate lower level hurricanes and tornadoes. For wind velocities more than that, you can probably expect other things to be blowing around triggering the motion detection anyway.