2/ This is like complaining that climate activists were harping too much 30 years ago, and that's why nobody listened
this is a serious issue though.
if you harp too much about something, it becomes background noise. people get desensitized.
if you harp about too many things, it fatigues people as well (ever heard of "alert fatigue"?).
so yeah, harping too much, too loudly about too many things is a serious and the society should really start looking into this
(edit: i am aware of the irony of harping about harping)
Or is the only way to do that successfully, doing it subconsciously/covertly like the state actors are swaying public opinion? :-/