Several of his arguments stem from his perl heritage. He gives a nod to moose's roles when complaining about Dart's weak OO (I actually agree with this one), advocates implicit conversions in stupid Perl-like ways, whines about + overloading in ways only a Perl user would, and relates Isolates to Perl's threads in ways that don't make sense based on my reading of the language spec (Perl's threads are way worse than what dart's seem to be!). Perl is directly visible in over half of his points! Some of his arguments are actually valid, but some obviously stem from his mind being corrupted from too much Perl use.