I’m sorry, I’m not often someone to whine about Firefox UI. Usually their changes have been for good actually. BUT! But but but. Proper UI design would require AI features to be disabled if the toggle is disabled. This is both highly silly and very confusing.
Is this AI Blocker 3rd party plugin or first party setting? In the same sense if those ad blocker are first party stuff that’s build into, say, youtube or news site, then yes, that would totally be a better option, off to turn off ads, on to turn on ads. If it’s third party tools made literally to turn off ads, then it make sense to turn on to block ads and turn off to allow ads. Common sense, yeah?
Depends on the browser. Many have it built in now, so your argument still fails.