Comment by atoav

My guess would be that most people just copy (mimic) what is already there. I sometimes work as a freelance web administrator and I can assure you 95% of people who create websites for a living have never read through a list of HTML tags, have only a slight idea of the semantic web and in the end they are more like people who cobble existing things together and are out of their depth pretty quickly.

Not that this is problematic per se, everybodies milage may vary and we're all out there to learn. But if I told one of them about the output tag thry probably wouldn't even understand why that would be important.