I remember in the mid 2000's when I was in a more conservative zone of my political explorations and listening to a lot of Dennis Prager and Bill Bennett that somewhere the name Saul Alinsky game up and I think it actually came up, right along with Bill Ayers and Bernadine Dohrn, when Obama was looking like he'd be the Democratic nominee.
As far as I can tell Rules for Radicals has become a piece of open-source software, as has the 'black block' tactics and anyone from Antifa to Boogaloo, QAnon, and any sort of alt-right groups know about them all too well and can use them as desired so it's not to any side's particular advantage at this point unless a particular side choses not to use it.
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The loneliest part of life: it's not just that no one is on your cloud, few can even see your cloud.