Thats not really their conclusion. Thats the Rosetta Code ranking. Table 4 is the one that has summarized results of many tests and includes a lot more languages.

Python should be even further down - this list doesn’t account for the fact that you have to rewrite everything because “That’s not pythonic”.

Perl should be higher up because it let’s you just do the things with some weird smileys without jumping through hoops.