I remember when clients would ask for "validated" html when 9/10 of the biggest sites didn't even validate. It was like these people did a little internet research and some listicle somewhere told them the "5 things you MUST have in a web developer" and even though they didn't have one fucking clue what it meant, hell, they just HAD to have it. "But will it validate...?" If you can say that in a painfully whiny nasal voice you just took a step inside my head.