You should do more research. Benzos do have long term effects, but in number it’s only a fraction of the pfs symptoms and most of all, not from the same cause. Benzos can be tapered down to zero and detoxed, pfs cannot.
It’s anyone’s choice, when consulting their doctor, to accept a treatment that will alleviate some of the pfs symptoms. Some will prefer the pfs symptoms, I chose to be able to sleep so I could deal with the other symptoms. That’s a personal choice, I don’t suggest taking benzos nor do I suggest against it. People should discuss with their doctor what is best for them.