This had all happened automagically so I hadn't even noticed, but I just checked about:addons and sure enough, uBO Updater is up to version 1.6.9 (presumably to handle the new repo) and uBO itself is up to 1.16.4.16 on my browser!
I was noticing the referenced WaPo article worked fine on my system, but hadn't a clue why. (Not that I was wont to complain!) But anytime I install a new browser, whether FF, Chrome, or Edge, the first thing I do nowadays is install uBO on it, so this would explain it. (Internet advertising is so out of control nowadays that you just can't go without something to tame the chaos!)
I've run into a couple of sites that require (or at least work better with) service workers, so I too have them enabled in about:config, even though the legacy uBO I use doesn't need them. But I restrict service workers to the sites that do need them with a line in My Filters in the uBO dashboard:
*$csp=worker-src 'none',domain=~mediafire.com|~html5test.com
There are probably a few other sites I should add to that line (mega.nz perhaps?) but I haven't gotten around to it yet.
Ironic to say the least, given the article's content: "Don't use Kaspersky AV because the Russians will violate your privacy; let the WaPo do it instead!" I guess Jeff Bezos doesn't think he's rich enough yet; after all, he only has his own space program....
(FWIW, Elon Musk's space program is better though )
The current legacy version is newer, but it's numbered 1.16.4.16, so AMO thinks 1.17.4 is newer and "updates" it accordingly. Perhaps now that it's separate, JustOff should consider bumping the version number to avoid this issue. Meanwhile, you can turn off automatic updates for uBO, or you can install the "uBlock Origin Updater" add-on, which will force the browser to update uBO from the legacy repo instead.