I think part of it’s that not all propaganda is bad.

There’s probably a term for it, but I’d draw a distinction between “opinion” propaganda and “aspirational” propaganda.

One tries to change your opinion of something, like “cops are good noble and always do the right thing”.
The other encourages the viewer to live up to some ideal. It’s entirely possible for that ideal to also not be great, but even then “I should be” is better than “they are”.

A lot of PSAs and things from the ad council fall in the later category. Like the billboards that basically say “real men are present and emotionally available fathers to their children” or "good parents teach their kids healthy diet and exercise by example”.
They’re openly cases of the government trying to change public opinions or attitudes (which arguably makes them better examples of propaganda than a lot of commercial television), but they don’t feel as objectionable.

“This honest and kind man who always tries to do good and help those around him to the point that it overshadows him being a physically perfect human is the embodiment of the emblematic American man” is more in that aspirational category.