It is very important to be truthful when advertising. If you are not, then people wil be misled into buying or doing something they didn't really want or understand.
Many of the Canada West posters (including mine) made immigrants think that Canada West was an easy place to live. The immigrants would come, thinking they could start a farm quickly and get rich, only to come to Canada and nearly starve to death in the harsh winters.
It was unfair for the Canadian government to bring in immigrants by misleading them into thinking that settling in Canada was easy.
Immigrants would have been better prepared if they were warned about the cold winters and hot, dry summers, the hail, the soddies, and many other things. Less people would have come to the prairies, but at least then they would know what they were getting into.