I don't believe the PH00 mentioned at the top is the correct screwdriver for this. Like the original Switch Left Joy Con Rail replacement guide, JIS000 seems to be more correct after I found out the hard way. Maybe Y000 as well, but Y00 worked well enough.

I would also recommend adding the "These screws are torqued down" warning on the rail screw sections, as those screws were specifically the ones that stripped for me, which I also saw was present in the original Switch Left Joy Con Rail guide.

I'm also a little confused why Step 6 has you remove the middle screw from the left rail just for removing the back shell. At least on my Switch OLED, only the topmost rail screws on the left and right rails go through the back shell. While this is required later for this particular tutorial, it doesn't seem necessary this early.