I think hand tools require less skill to get started safely, from my experience teaching kids and grown ups.

For getting started, I would probably agree on most things

But something like a domino will give you what is essentially a mortise and floating tenon joint that is far easier to do for a beginner than trying to accurately chisel it out themselves.

I think that most anything you'd use a router for is also way easier, skill wise, than doing it by hand as well.