It reminds me of the good old "my password takes 2 billion years to crack, but my kneecaps only take a few seconds" metaphor about people in tech forgetting that physical coercion is, in fact, a possible attack vector for your IT security.
It's like saying "don't worry about gun control because car accidents kill way more people right now".
Establishing technical means to do something (limiting access to files via DRM) is not as urgent as actually doing it (Florida carting books out of school libraries). And technology is not a monolith. Pluton specifically is far from being a universal requirement on Windows, and the entire PC platform is open enough to support alternatives for a very long time. It's possibly worrying (though it looks like Microsoft's intention is confidentiality management in enterprises for now), but far from "turnkey tyranny".
When computing is controlled at a hardware level, you have far fewer competitors and market places. Working around things can be significantly more difficult and you may be stuck with scrapping up old less capable tech trying to do something you should have better options for. This is the reason technologists fear technology control, not so much because of tunnel vision but because the general population can't work around it, even experts may not be able to work around such protections. Low tech always has easy work arounds--the option exists even if you may fear the consequences.
Any such bans will always take the path of least resistance to cover the largest possible population with the easiest means. Pareto Style. And I care much more about those 80% of people having access over maintaining my own. Because ultimately, those people will set cultural standards of the future, not some technologist with their fully libre laptop.
And those attacks are, as of now, not that sophisticated or blatantly censoring. An overwhelming majority already do their computing on locked down devices (running iOS, Android and ChromeOS) and the big censorship wave hasn't hit them. Every half decade or so Amazon removes a book from Kindle as a side effect of capitalism and copyright and there's a huge HN thread mistaking it for deliberate censorship, but overall it really doesn't matter.
Also, let's be completely clear that DeSantis didn't ban math books. This was an attack on ideologically inconvenient books, mostly queer literature. It's part of the push to label us as "groomers" for merely existing around underage people that has caused a spike in violence and mistrust directed towards trans people. Once our rights are sufficiently eroded, they'll go after the gays again, and after that, maybe, we'll have progressed on the fascist cataclysmic us versus them rhetoric to revive blatant antisemitism. Or racism. Who knows. But safeguarding the high end bit of tech that is not even mainstream anymore wouldn't help society out of this and being concerned for it is a very individualistic choice.