I would want to use it on at least 3 computers. I don't think that developer license allows that. And registering 3 different accounts probably is abuse of that system. Also I don't really do any development for RHEL, just using it for my personal computing needs.
I have a single server in my house. Mostly used to back up all my different devices and to run Plex. I run CentOS today.
I am not clear on the restrictions and if I would be allowed to use the free RHEL.
With the hassle (subscriptions, restrictions etc..) it isn't worth it.
I do wish RHEL would allow it for usage that doesn't make money, like personal servers.