All I see these mini-PCs as, as just personal PCs. The kind you boot up, record things on like private documents, power off and proceed to do other tasks and things on your more expensive machine that can handle the workload. Like they're meant to be PCs you do not want people discovering or see you using, so to say.
I just have a hard time seeing mini PCs as primary devices for everyday use, especially when their upkeep is poor and temperature management is poorer.