You yourself know that this claim is entirely unsubstantiated, as evidenced by the fact that you felt the need to create a throwaway account. pcwalton is an active commentator throughout HN in general, and garbage collection and parallelism are two of his areas of expertise. If his opinion is somehow uninformed, then tell him so and explain how. If he's not uninformed, then the only thing your comment is doing is trying to shut down legitimate criticism.
All languages have faults. Engage with your critics, own your faults, and either correct them or justify them based on your principles.
EDIT: To give an example, pcwalton also initially criticized Go for not being memory-safe for values of GOMAXPROCS greater than 1. However, the Go team later implemented the dynamic race detector, which, if you've followed pcwalton's comments at all, you know that he is actually quite impressed with.
I always post using throwaways since I don't like karma influencing the content of my posts and it also makes it significantly more difficult for third parties to profile me.
This is some glass-houses logic right here, given that you're attempting to leverage trivially-falsifiable assertions in order to profile pcwalton as a Nim hater with a personal vendetta. In the meantime you have yet to actually address his criticisms, which, to reiterate, indicates that you're trying to shut down critics via deflection.
(I suppose, in the future, pcwalton should just generate a throwaway before commenting on Nim.)
All languages have faults. Engage with your critics, own your faults, and either correct them or justify them based on your principles.
EDIT: To give an example, pcwalton also initially criticized Go for not being memory-safe for values of GOMAXPROCS greater than 1. However, the Go team later implemented the dynamic race detector, which, if you've followed pcwalton's comments at all, you know that he is actually quite impressed with.