Nah, uneducated agile development is always a mistake. Just because something “works” doesn’t mean it works correctly or efficiently. Many people wrongly believe agile development goes so far as to say you should move on the moment something works. So, when someone implements something in a piss-poor manner, these types simply test it in the most common usage case, see that it “works”, and move on. Executives see that it “works” and assume they have fully competent devs. Cycle of shitty products continues.

Could also simply be from a dev that doesn’t realize how far CSS has come since the old days where basic styling was about it.