(edit: no) Is it a good idea to use an Android phone as an external SSD for backing up my home folder?

I would like to distro hop to EndeavourOS, and it has been suggested that I use rclone to copy my home folder to an external SSD. Unfortunately, I don't have an external SSD at the moment, but I do have a phone that has plenty of free space. Is it a good idea to back up my computer files to an Android phone? My gut says it's not a very good idea, but I'm not sure why.