I am not a "unicode purity fetishists" and python 3 has been a compelling upgrade for me for the past 3 years. I have not written single line of python 2 code since 2 years ago. So your statement that it is not compelling for anyone is wrong. Maybe some people are python 2 fetishists? I have upgraded multiple python 2 codebases to 3 and I am not understanding what people are whining about, it is not rocket science.
This is something people are getting paid to do; maintain their codebase and keep it up-to-date.