It doesn’t seem to be a super common, general thing where I live. However, there are some more prone to it than others, like places that have a bar and/or otherwise serve alcohol. Typically though it’s only the nights they do live music and that’s most often weekends and around specific holidays.
Mostly I just avoid pretty much any establishment if they’ve got live entertainment for the night and I’m there to eat as well as talk with others. I avoid any that are particularly egregious in terms of loud music. I have been with a group where we asked if the volume could be turned down on the speakers one night at a live event where we were one of only a few tables in the entire place and it was clear that nobody was particularly interested in damaging their hearing. The manager slowly slinked over to the performers about 5 - 10 minutes after the request, and they stopped playing shortly after.
I’ll be upfront: I don’t know. But I do have an anecdote.
I have a family member who swears that their phone is listening to every word they say. Their evidence is that they say they get ads or news regarding things they had recently had conversations about.
Fast forward a bit, they come and stay with me for a bit for a visit. This phenomenon starts happening while they are here. Absolute proof, right?
Well, no not really. Every single instance of “evidence” they pointed out could be explained as simple IP association.
“We were just talking about having okra for dinner and now my feed is filled up with okra recipes” – well yeah, we talked about that, so me being the good host I am, I looked up how to cook okra so I could maybe fix some for our dinner.
“We also had that conversation about Tom Hanks and I just got an ad for one of his movies” – yeah, we did, because you watched a couple Tom Hanks movies on Hulu yesterday so now they know someone at this IP is watching Tom Hanks movies and now might be a good time to advertise something else he’s been in.
And this went on and on.
So anyway, I do wonder if there’s a chance someone else on your same wifi / cell / whatever is looking this stuff up and it’s just coincidentally seeming like the all knowing omniscient internet gods are leaking your private conversations.