My personal opinion, if you can't mod yourself then you have no right to complain and bitch about a mod. It's not like you could do it any better yourself.. 
I'm a programmer, and it pisses me off when people complain about program bugs when they don't know anything about programming; they have no idea that stuff like this is hard work..
If you use this as a reason to dismiss any(even unfounded) criticism, then I'm sorry to say, but you are kind of an elitist jerk. Eventhough someone isn't experienced in programming doensn't mean he/she can't figure out if something isn't working as advertised.
Let's have little example: A hockey goalkeeper is only able to block 1 out of 10 shots coming at him, the rest get behind him in to the goal. Even though if you don't even know what iceskates are, isn't it ok to say that the goalkeeper isn't very good? Or is it ok to just dismiss your criticism until you are just as skilled as he is?
I don't mean that you have to just take criticism and do nothing. Just come down from your ivory tower and give reasons why the criticism might be wrong.
Also this doesn't justify baseless cristicism at all.
Don't mean to start a flame war by calling you an elitist jerk, just trying to be helpfull. Don't take it too personally
It's kind of hard not to take it personally, but I'll try not to.
My point is that there are (not just in this mod) tons of people joining forums, find some minor glitch and then write posts like "aww lolzz teh mudz sakks becuz theres glitch lolol". The developers have put down countless hours in making a product that we use for our enjoyment, and they expect nothing in return. I find it lacking in respect that people are complaining way too much. If there is something wrong, post a proper bug report so that the developers can reproduce it and (hopefully) fix it.
To sum up, constructive criticism is always good, random whining and bitching is not.
And about the goalie comparison, if you don't even know what ice skates are then you probably couldn't do a better job at blocking the goal, so what right do you have to bitch at him for being bad? Yes, he is probably bad, but why would you bitch at him for it? Give some constructive criticism instead!