"Apply user CSS" to fix a design issue was more understandable a decade ago when everyone used desktops exclusively and Firefox w/ Greasemonkey was more promine

"Apply user CSS" to fix a design issue was more understandable a decade ago when everyone used desktops exclusively and Firefox w/ Greasemonkey was more prominent. With the current state of the browser ecosystem and more importantly, the shift to mobile devices where it's nontrivial to apply CSS hacks, it's more on the website to make the relevant design changes for user happiness.