Most of these are captain obvious click-bait type BS.
But:
I think *my* biggest concern is security. I am not retired, not close to it, I work and thus leave my RV unattended for most of the day. It is a relatively easy target.
The type of security RVs offer is not of the same caliber as household security. Break-ins even stealing the whole thing is not out of the question.
I am in the process of buying something and when I do, I will do my best to upgrade security. Go above and beyond. Possibly install a kill switch, etc.
I have to deal with issues that most retired full-timers just do not encounter.
I don't keep anything valuable in it but it's not really a solution either.
