That's also my impression. I mostly use FB for my neighborhood, hiking, biking, bird watching or any kind of nature related groups. It's been mostly pleasant experience for me. I think you can use FB without lowering yourself in all that outrage and drama. It's absolutely doable.
Twitter, OTOH, is a cesspool. I feel the whole platform was designed to congregate the worst of humanity and to bring out the worst in any decent person. It's almost impossible to use Twitter without causing emotional harm to yourself or the others. I find it interesting that FB gets so much hate from media, but Twitter seems to be a media-darling.