Do you know anyone with fibromyalgia? And is it really so bad to where a person is totally disabled?

Or is it tolerable enough to at least be able to work part-time? .. my friend's girlfriend claims she cannot work because she has fibromyalgia and doesn't feel good most days. We all got into an argument today because I strongly feel she should put in a little effort and at least work a couple of days a week to help out with bills and everything else. The only thing he gets his disability and that's nothing. I think he receives around 850.00 a month. Once he gets paid at the 1st of the month, they are out of money for the next 3 weeks after. She used to work and suddenly stopped out of fear of covid last year. They have both been vaccinated but now her excuse is that she doesn't feel good. I can't believe she just sits there and does nothing and allows them to struggle every single month