am not saying this about those mentioned above as I don't know their sitch, it does seem with a lot of the channels I followed that the idea of being a motovlogger is what appealed over actually being one. Even as a hobby it is very time consuming, both recording footage and editing it, then add in technical issues, forgetting to plug in the mic, etc, even as a hobby it can become a chore to some.
Motovlogging has been my savior this week as I was supposed to be going on a cruise with a mate who was getting married on the boat, my ticket fell through so I have 2 weeks to kill and had I not been motovlogging I'd have been far less motivated to do anything constructive. It has had me out of bed every day (today was a rest day) and out on the bike exploring some really cool places.
Am sure those that you mentioned are ok, just busy with life!