A great many use their products grudgingly in my experience - posting minimally, staying because network effects make it difficult to completely move, and not wanting to give FB and friends more than they already do.

I think you need to recalibrate in your own mind what using a product means. It doesn't mean you like it, or the company behind it. It may also be due to monopoly status.

Do you like your utility company? Your phone company? Your ISP? Your insurance?

They bought those users. I’d quit ASAP if it wasn’t necessary for work. However, I won’t give them a dime.