Understanding how remote access tools work
In my experience, the video conferencing tools with remote access are not that great for remote access. And, I guess, I wrote the reason for this in the preceding paragraph. Remote access requires a lot of attention to many specific details and a ton of continuous testing with an operating system's changes, and if you just add remote access as an extra to a video conferencing tool, you will treat it as an extra entity.
Lag is a big issue when talking about remote access. All the video conferencing tools with remote access features that I have used so far have issues with lag. This is great if you want a fast pairing session of only 10 minutes. However, after a while, the lag becomes annoying, tiring, and you start wishing for a better tool to use. Lag is the killer of any good remote pair programming experience. That is the reason why I prefer pairing in a code editor with an add-on that permits remote pairing: the lag is almost gone...