I think i can relate to that very well. Let's compare. Two people of possibly equal academics and equal industry profiles. First dreamed of coming to Canada for years, applied through some PR program, took several years to come here, initially had a hard time wasting all his life savings till finding a decent job and building his foundations again.
The second one - owning to some in demand job here, got here on a temp work permit, became a PR a couple years latter via some thing like CEC and had to face none of the issues the PR guy had.
I have seen so many belonging to the first category calling the latter using "back doors" or things like "temp workers should not be allowed to get a PR in land" and what not.
So i understand the sentiment. But it explains their concerns.
On a personal note, when i joined this forum i faced quite weird reactions from the first kind of people. I was asking for help and got what not in response. So yes this issue exists.