CFL Respect?

Like Really whenever a CFL player goes to the NFL they put previous thing as Free Agent. Like they could put CFL. These American teams look at the CFL as the Canadian Free Agent League or sumtin?
This is Ryan Bio on GB web site.

Jon Ryan #9
Position: Punter
College: University of Regina (Canada)
NFL Exp: 1 Season
Packers Exp: 1 Season
Ht: 6' 0"
Wt: 202 lbs.
Age: 24
Aquired: FA-06
Status: Active Roster

BB it just says how he was aquired which would be a free agent. You'ld see thet even beside other NFL players who were released which technically is what Ryan was