And by far the easiest way to do this, if you have an Android phone, is to use the beautiful StreetComplete app: https://github.com/streetcomplete/StreetComplete/#readme
At that point I'd rather open up Google and give them the data point that someone is interested in this store at this time (to make these crowdedness plots) than provide Facebook with my data ._.
If they have an own website, sure, but a Facebook page? I'm not whitelisting those IP addresses for my browser to be able to visit that.
This is why I always add the website as the most important field for a POI btw: easy to click through, always up-to-date opening hours. They're very often out of date on OSM because the shop owners only supply that info to google and call it good.
> This is why I always add the website as the most important field for a POI
It has been over a decade now since most physical-retail businesses began giving up on their own websites, using only Facebook pages instead, unless they are part of large chains.
This was indeed a trend a few years ago, but it is not true anymore, in my personal experience. Even tiny shops, if they are only a bit more technologically knowledgable than average, tend to have their own web page.
Maybe a US thing? Where I live, less than 10% of the shops have a Facebook page, and I'd expect maybe 10% of those have up to date reliable information.