If by "nobody" you mean "everyone who actually gives a damn about efficiency, bandwidth, speed, and accessibility" given the utter huffing mental-midgetry of crapping presentational classes all over the markup, undoing 24+ years of progress, violating the separation of concerns, not giving a damn about leveraging proper semantics, and cramming one's cranium up 1997's rectum.

The broken bloated idiotic train wreck laundry lists of how NOT to use HTML that are mind-numbingly dumbass trash like bootcrap or failwind, are monuments to bad practices and developer ignorance.

Anyone telling you otherwise doesn't know enough HTML or CSS to be flapping their bloody trap on the subject.