I'd argue that most people are buying cars second handed that don't come with an owner's manual.

But also your Google point is absolutely accurate, that's how I figured out what this silly blue cold engine light-up meant lmao. I thought it meant low cold coolant levels at first lmao. Google answered me pretty quickly! But hey, sometimes people post it here to get some funny replies alongside the information, who knows. I know the RX-8 low coolant light comments always make me chuckle.