can't speak much to the Linux aspect of ur question, but I think grlevel3 could be run through "Wine", which lets you run windows applications on linux. not sure how technically involved it is to set up. I think radarscope (should?) be linked to an account with user/pass, so I'd think you could download on a new windows machine and sign in that way. For the display, Hz is basically the refresh rate, so how many times per second the display updates. 60hz is pretty standard, if a bit on the low end. lots of new displays have a refresh rate of 120 or 144hz, which looks much smoother, especially if you're gaming. this probably won't be super noticeable unless you're playing a lot of games. for the rest of the specs, what are you planning on using the laptop for?
the "copilot" thing just is microsoft pushing generative ai in everything they sell. copilot is basically their version of chatgpt. a laptop advertised like that probably has a dedicated "copilot key" on the keyboard, and a bunch of gen-ai features in the software you probably don't want. that would turn me off of buying the laptop, personally.