That particular user comment I was thinking the exact same thing around 2 hours ago.
Trying to promote a substandard product by hiding the fact that alternatives exist is a disservice to the user and may deny the fact that the promoted software fails to clear the bar raised by the freeware alternatives.
To promote or review a product where it's weaknesses or failings are not permitted to be discussed, does both the developer and user a disservice. To permit only positive or nice points does not allow a balanced assessment, and in some cases would leave users with nothing to say. :|
To not permit comparison with other products does not allow the user to determine if the offered product might be the best solution for their problem. The fact that the products suggested for comparison are licensed as Freeware and Open Source - so that the comment pages do not become flooded by competing developers and affiliates as a "Shareware Yellow Pages" (aka spam).
A typical comment posted on those front pages - the best thing about this site is the freeware suggestions, closely followed by BuBBy's hairy midriff. (There were only two options on that particular survey). ;)