It's hard to say and depends on the audience. I'll assume we're going for absolute beginners to Linux. In my opinion (long time Linux user, very aware of the hardware I'm using), there's not good enough explanations for why some of those actions are necessary. The GPU driver one for example will be a bit alien to someone who has decided to try to keep their old laptop going through changing from windows to Linux. How do they know that they need the drivers? What will installing the drivers do/what effect will it have? What's a proprietary driver? What's open-source?
Actually this is something that bugs me in general about beginner-targeted Linux instructions, we tend to mention and encourage the use of things like "the open source driver" or similar without explaining what that means. Yes, we generally would prefer open source drivers, but in some cases they are significantly worse. Most people aren't ideologues, they just want their shit to work. Yes encourage people to use the open source driver, but don't tell them that's their only option. If they need their device to actually work they probably have to use a proprietary driver sometimes.
Instructions for specific applications like timeshift would benefit from screenshots. Yes the gui could change but it makes it easier for readers to see what is happening and determine for themselves if they've opened the correct application.
For the snapshots, firstly what even are they? What is timeshift? Why are you telling me to do these things? When do I need to do this again? How would I restore from a snapshot? I could suggest similar criticisms for most points.
Overall there are useful points here, just needs more justification or detail to flesh it out.