Facebook didn't kill forums, forums killed forums.
While Facebook is full of bad advice, idiots posting memes, and endless pictures of someones dinner/dog/cat/children, lets not pretend that forums weren't/aren't guilty of all kinds of wrong doing as well. A few Google searches for common mechanical issues will turn up forums full of absolute rot.
So on that front, I'd say they are as bad/good as each other.
What killed forums? On a technical front, someone has to set them up, pay for them, manage them and advertise them. Most forum software is quirky with a lacklustre user experience (e.g. look at the complaints about image hosting), and every forum requires a new username/password.
With Facebook there is no cost, most/many people are already signed up, and it's been written to work with every device you might access it from with a uniformed interface including 'free' image/video hosting. Not only that, but the same 'tool' can be used to talk to your grandma, your gaming pals or your chosen car community, and even run your business. It is, technically, a better tool. They built the better mousetrap.
And then there's the social side. Every forum is a fiefdom. Every forum I've ever used has had a number of cliques (TMF does very well on this front, to be honest). Fall out with one/any of them and you may as well give up on the forum. If that forum was the main community for your e.g. make/model of car, you're stuffed. The same can/does happen on Facebook but because most feel more accountable (the same user account can be used to call you, see your family pictures, lists of your friends etc..) I don't notice it happening quite so much. If it does there's a very good chance another group/page has been created that you can join. See the point above - it's free and easy to create a new group/page, there is virtually no barrier to entry.
Do I think Facebook is the better tool? No. Not for the content that goes on here or forums like TurboMinis. I am regularly frustrated with Facebook when I can't find a conversation or image I was looking at 5mins ago because the algorithm has decided I should look at something else now. When it changed from being a time-based to an algorithm-based feed, it became hopeless for documenting a timeline (e.g. your project build). If you could create a group and set the timeline to be sorted by date/time, and add a decent search function Facebook would have all it needs to finish off the last remaining forums (technically).
So what am I trying to say? Facebook is the better tool, like it or not. It's not perfect but it's clearly doing what people want and that's all it has to do. I don't like it, but I'm not quite ready to try and develop the Next Big Thingtm
Edited by Icey, 25 August 2021 - 10:17 PM.