Hmm, I am pretty surprised by that, but I'll take it at face value. I suspect there is too much else going on for a comparison of salaries by language to be me

Hmm, I am pretty surprised by that, but I'll take it at face value. I suspect there is too much else going on for a comparison of salaries by language to be meaningful. Those Perl programmers are probably highly paid mainly because they have 20ish years of experience, and lots of other valuable Linux/Unix experience. There are probably lots of fresh graduate and entry level JavaScript / Java / C++ developers bringing down those averages. I always get a good laugh when I see job ads for a "Junior Perl developer" paying 25k GBP or something. They stopped making those 20 years ago.