You simply are not getting for what the tool is designed for, obviously it is not meant for your application.
As I understand it, RStudio Cloud is focused on education, not on general purpose use. I found it inpractic for production work too, that is why I use my own EC2 instance on AWS and configure everything to my needs.
RStudio Connect is not a cloud based service and has no free tier (it is paid only), what you are using is just meant as a demo, not a functional service, that is why you don't see people publishing there.
You are being marked as "off-topic" because this category is meant for discussions specific to the RStudio Cloud platform, if you want to discuss installation of the RStudio IDE under ARM architecture, open a new topic on the #rstudio-ide or #r-admin category, there are already some similar topics over there.