Do you think the OP would have avoided what had happened to him if he is been using Linux by any chance? He was using 2FA via SMS, it is possible that the hacker obtained his verification information using the SIM swap technique. Regardless of OS and wallet type, some users are simply not ready to be their own bank. Regarding hardware wallets, I wrote my opinion in a previous post.
As long as you use everything the wrong way, it obviously doesn't matter which OS or wallet you're using. But Linux is not as easy as Windows is and ever since I moved from Windows to Linux, I have learned lots of important stuff about the way your behavior could put your PC at risk. It was more of an eye opener for me and it's just a friendly advise to move on from the privacy-lacking Windows - could be an eye opener for him too! But I guess we're all different 
some users are simply not ready to be their own bank
True. No comment here 