(2) I've had phases of my life where activism has been 30-100% of my activity so I've had a lot of experience talking to people door to door, tabling, giving speeches, convincing people to run for public office, going to meetings of different groups to build bridges, etc. (... with that emotional sensitivity!)
I've given many talks where the crowd was excited and other times been showed the door early and got harsh corrections. I know how people respond to messages when I deliver them and when others deliver them. For that matter I work in the social sciences department with survey data and I'm well read in political science even if I have to defer to the experts at work about it.
So I know if you're going to talk about "white privilege" you might as well mortgage all your future earnings and give them straight to the Ku Klux Klan. I'm deeply offended when "woke" people act as if teaching elementary school students the difference between "equity" and "equality" is going to do anything about a difficult problem such as racism. And I think strident transgenderism has made expressing your gender in any unconventional way more and not less dangerous in the last 20 years.
I'm angry about left-wing slacktivism precisely because I care about the things that they say they care for.