Some people just sort of want you to say what they want to hear, I've noticed after many months of stressing "lurking"/reading what people are posting the vast majority of people are just overall helpful and in the same boat on the whole process: eager, helpful and stressed out!
Seems occasionally are a few who clearly has a complicated case and tends to want to blame visa offices ect and try to stress others out ("Watch out! This part of the process is indefinitely complicated hard if you do it you'll have problems!) and when told this is not correct they tend to go off on tangents. The occasional person who is just so frustrated they seems to make bigotry comments like "well then don't come to Canada stay in xx!" or just rude comments in general.
Point is, the negative people are usually more quick to act then the positive people. So I wouldn't worry about it or take it to heart! Keep your chin up!