Most likely they were younger when they first saw it, so they never really thought about it and since have grown to accept. Really Perry's line in SR is not that different from Lois's reaction in the original film.
They are reporters and had to covered politics and seen the darker corners of the system. It makes sense they would have much more cynical view of things than someone raised on a farm in Kansas. Lois & Clark had a similar contrast between the two characters.