When I see people building gaming pc on youtube, they dont really use the power method at all. I've seen this one guy made a building pc tutorial uncut, and he didn't use psu method or touch the psu method, but the guy uses an ESD anti static wrist band to his arm and it connected it to something else but the camera didnt show it up.
For example this one:
https/youtu.be/tdg38SCd_n0
Go to 10:30 Minute, and You'll see what I'm talking about.