i absolutely hate how the modern web just fails to load if one has javascript turned off. i, as a user, should be able to switch off javascript and have the site work exactly as it does with javascript turned on. it’s not a hard concept, people.
but you ask candidates to explain “graceful degradation” and they’ll sit and look at you with a blank stare.
Took me ages to find a snippet that has a manual dark mode toggle but in a way that works with prefer-color-scheme so by default it inherits your settings but you can overwrite it… It’s just not a priority for a lot of people or they’re ok with the site flashing or something.