Recently there was a thread where moving a file to the trash by accident resulted in a frustrating experience... I can't imagine how frustrating it must be when someone accidentally resets the entire device, instead.
Is not that I don't see the value of such a feature but from what I can tell, most people coming to the forum asking for help don't need to do a full factory reset, and in fact I'd say most would prefer not to do so in fear of losing all their settings, configuration files, installed programs, etc.
Sometimes it may be necessary to fix some weird bugs, but on the other hand if the installation was faulty to begin with, a factory reset may not actually fix anything so there are not guarantees either way
I personally would let the users decide and do this on their own. The process itself is not difficult and it may a good learning experience. For those who simply aren't willing or able, I would assume someone else must have installed ZorinOS for them who can be reached for help with this. I myself am the designated IT support in the family so I'm no stranger to this situation 