I think you've misunderstood; I was laughing at them claiming Arch is less functional than Windows. It was stated so factually, when in actuality it's nothing more than an opinion (and a debatable one).
With that said, my partner has been using a Steam Deck for a little over a year now, to date they haven't needed to use the console once (or "hack" anything). You're being disingenuous or doing it wrong.
Good luck with your peaceful / not peaceful demonstration and let me know how it goes; the image of a small group of people with placards protesting against "OSes and other critical IT software" gave me a good giggle.
Watch out 3% - we're coming for you!