It's a coordinated psyop to enforce mass surveillance and control. The question we should ask ourselves is "Who are they?". Their agenda is clear already.
I don't think it matters what kind of musician. I'm mainly a electronic music producer and I've done exactly the same thing; recreate entire tracks from scratch from some of my favorite artists. It has helped me a lot in understanding every part of music production. Everything from designing every individual instrument to arrangement and finally mastering.
No need. Just don't look at the keys while typing.
"b) if you can't buy such keyboard (you really should), try to pull out keycaps and randomly change their order;"
No need. Just don't look at the keys while typing.
"c) put blanked or some non-transparent sheet over your hands."
No need. Just don't look at the keys while typing.
For real, there is no need to complicate things. Just start out slow and you'll gradually increase your typing speed as you go as long as you're touch typing.