I don't see how the number of tags/projects translates into a worthy popularity metric. Maybe some of these popular languages have more tags because they're PO

I don't see how the number of tags/projects translates into a worthy popularity metric. Maybe some of these popular languages have more tags because they're POS languages that cause grief and consequently many more questions/posts that are created by even a smaller group of users. Also there's no time element, so a supposed popular language may have had zero tags created in the last year, yet it only drops marginally relative to the pack. And an highly active new language is ranked against all historical data of older languages making it less popular than it really is.