That is pure BS...
The National Occupancy Code for pilots (Air Pilots NOC 1171 I think) is considerred skilled work, and will allow you to apply as an immigrant. That SOME people have complained to HRDC in Canada that "someone else" where taking Canadian jobs, only made it more difficult to get a work permit, so they are now limited in time (4 years max with 2 years quarantene), and difficult to get a Labour Market Opinion, but not impossible.
The process to immigrate is raather long tho, so don't expect to get in the first 18 months or so...
Cheers
Winnie