The thing I try to keep in mind with the feedback tool here is that people are generally writing rushed snippets of what they are trying to convey because they either want to get back to the fight, or want to get it in before someone kills them. The problem is that very few people go out of their way afterwards to make sure the mapper understands what they are trying to convey to them.
Also, the biggest thing is that everyone here is coming at a map test from a mapper perspective, and they aren't necessarily that good at the game. You'll get a lot more little bugs and tweaks here than you will in comp testing, but gameplay-wise it can be hard to convey what they are trying to get at, if it's even a valid concern. I try to take it as "take a look at this general thing" rather than word for word what they are saying. They are feeling this way for some reason, so let's look into whether it's legit or not.
And ultimately, everyone just wants to be helpful. This leads to a lot of "clip" or vague feedback that may or may not be useful to the mapper, but it's done with good intentions usually.
So, in short, take the feedback in stride. Utilize the good, ignore the bad. I promise if the comp players had a feedback tool like this you'd get a lot of mediocre feedback from people who don't know what their talking about, too!