Yes it is. Particularly since it was an offhand comment noting that the recent shootings have caused people to be worried about shootings and people carrying guns in public places. As I said above, whether the stats say mass shootings are up, down, or level doesn't matter. People are on edge.
That would be true if you were trying to explain an observed uptick in police reports, but it's irrelevant here. We aren't talking about individuals seeing something concerning and independently choosing to call the police. We are talking about activists planning to use a tactic to attack individuals whose behavior they know to be legal.
They haven't been charged because they haven't done anything criminal. People call the police about lots of things that are lega. The guy sitting in the car down the road, the kids hanging out on the corner, etc. Sometime the police respond, sometimes they don't.
Are you correct that the behavior isn't criminal?
Remember, we aren't talking about people who have observed something they find suspicious and called the police. Your list of things people report to police is fine but it isn't germane. We are talking about people who are planning what to do when they see something they know is legal.
What is being described is a conspiracy to be the criminal law equivalent of a vexatious litigant. The fact that they are discussing this intent in advance of actually observing anything suspicious ... well it doesn't support your "people are on edge" theory but it does show forethought and planning.
What has this group said?
"You see a GunFilth waving its penis substitute, exit, call police. Armed robbery in progress.”
“I see you #opencarry with a gun in public, I’m calling the cops. psycho behaving erratic. make your day.”
“Why hasn’t someone called 911 so the cops can gun him down?”
Those are from Mom's Demand Action members.
The fact that the " official" message is careful to add conditions about "and is behaving suspiciously" doesn't change the fact that the message being passed within the groups is that:
1) anyone with a gun is suspicious
2) the reports need not be factual
3) the reports are being made in the hopes of committing homicide by police.
Now, when I look at a group conspiring to misinform the police in an attempt to murder individuals engaged in an activity the group knows to be legal, I start to think that maybe your claim that they "haven't done anything criminal" should be reexamined.