It's not an odd complaint.
There is a large protest movement that is doing a terrible job achieving its goals, if its goals are to actually effect change.
It's not on me or anyone to go decypher what a movement is trying to be. Yes, messaging is hard, but if you're a movement without a message, all you are is a bunch of angry people in the street occasionally causing riots.
If you're hanging around in a protest where folks are advocating killing federal marshals (protestors can't always spell very well) you aren't exactly... not endorsing that message.
You're getting down to my point.
I've generally been opposed to recent protest movements. I think they have done a lot of harm (property damage, human lives, destruction of community resources) and very little good (confused message, no clear goals, encouraging extreme hostile views and actions).
The protests have served as a venue for people do demonstrate their virtue and a mechanism for increasing divisiveness and ultimately have done considerable harm to achieving any of the goals they might conceivably want if someone thoughtful was taking charge.
"We don't have anything to say but we're going to talk loudly anyway and expect other people with more sense to solve our problems for us" isn't a great message for a protest movement. You can't elect the right people if you don't know what you want. You can't change hearts and minds if you haven't figured it out for yourself first. And most importantly, if you have a bad message or no message and you're perfectly happy to associate yourself with the people who do have violent, destructive messaging, intent, and actions... the people who might be on the fence to support your cause are going to become your opponents... not just opponents of the extremes you tolerate, but opponents of everything you're choosing to associate with those extremes.