Firefox 89 introduced super-extra-duper fatty bold fonts. Fatter than the Futura bold fonts. I want to get rid of this uglyfaced font that is hardly readable on non-retina screens. Tried to lower the level of [ layout.css.font-visibility.level ] from default 3 to 1 ... doesn't do anything. Do the Mozillians really believe that every FF user has a Retina type screen before their eyes ? With the 20/20 vision of Superman ? What were the devs thinking ???