Earlier quoted context omitted.
Like, are flyers for a protest "propaganda"? Is grafitti propaganda? They easily can be. Same with opinion broadcasting. It's not a matter of some strict definition, just whether you prefer a negative connotation with "propaganda" and how you feel about the thing being propagandized given that the negative connotation is the most common English usage.
That was exactly my point. The use of "propaganda" by nerdjon really just means "an opinion I disagree with".
Generally, Propaganda is used to sway opinion, get action, or similar when people may not be inclined a certain way on their own.
Ask yourself this: if there was not opposition to what Israel is doing right now, would they have made these billboards. Most likely no.
Would Rosie the Riveter happen if there was not a need for Woman in the workforce during the war?
Could keep giving examples, but you get the idea.
There are plenty of examples out there of established propaganda that isn't misleading or negative. It depends on the message they are trying to send and the action they are looking for.