What I know is some craftsmen and small workshops only use Facebook to do their businesses. If you are interested in their work and want to contact them, you can only do that through Facebook. They don't have websites nor blogs, sometimes don't show their email to the public. I don't know why but maybe they want to be selective.
I think for some it is just easier - they don't need to get their nephew to build a janky website, or cut into their profit by having someone build a decent one.
The older blokes in particular probably aren't worried or even aware of the issues with Facebook. For them, it's just a place to share pics of their grandkids visiting and boomer memes etc.
Even with the younger crowd - when I move, which is every few years, I often find new hairdressers on Facebook; few bother with a website. They're already on there and it's a great way to show their work to a wide range of potential clients.
Almost no one is going to a website every few weeks to check out updates from their favourite artisans, but they will scroll through a social feed and often interact with the posts.
What got me off Facebook was their fucking algorithm. Any time I said anything slightly controversial, like suggesting Trump was being less than honest, Facebook would make sure everyone I knew who disagreed saw it. For EnGaGeMeNt!
After a few engagement blowups, I barely use Facebook anymore. And now when I check, my feed is so full of ads and sponsored posts, and has precious little content from actual friends, that it's just not worth the headache.
I use it to sell things, but that's literally it. Legitimately the only things it's good for at this point. And every time I go on there I'm reminded of how terrible it is. Actually nauseating.
Possibly, I don't use alternatives much (primarily because I don't sell much in general). I prefer Facebook because so many people are there and it's easier to facilitate cash payments via meetups. But there could be better ones, I'm not all that familiar with Swappa or OfferUp.
I do ebay too but it's a lot less work to sell local on marketplace so I don't have to risk a bad rating because I took too long finding a box / packing / having issues with USPS not picking up packages etc. I only do porch pickup on FB so I can just step outside and get cash. It's especially great when I'm selling larger things too like PCs, servers, or UPSes which can be ~50lbs to several hundred lbs. I won't ship PCs or even spinning hard drives let alone anything larger like a server.
I was trying to buy a car and tried facebook, but it kept showing me people selling cars for $1234 and from imaginary made up locations. I think they were chop shops.
Same, I got burnt out on social media partway through the pandemic and just stopped checking FB one day after I turned off app notifications because I got fed up at being buzzed constantly for non-direct-interaction reasons. I feel like it's been a very positive change. I also only go there to sell stuff and I'm glad I feel absolutely zero desire to look at the feed at all.