I think that no amount of anecdotal evidence would be enough. For a very long times doctors had anecdotal evidence that bloodletting saved patient, yet they were fooled by their bias. I’m not saying advertising isn’t spying on our microphones, I don’t know, it might be. But it doesn’t seem very plausible to me: the amount of processing necessary, and the amount of network seems way too high. Also, voice recognition is still not great currently, it was even worse years ago.
You are still on the acid trip, just ride it until it’s over. It’ll be more fun if you just let it do its thing.