No, it isn't called "witnessing." It's called being obnoxious.
Seriously, who looks at that and thinks "Yeah, that's convincing. That's the religion to which I want to convert!"? Nobody does. If a bunch of Muslims were in a crowd at a Trump rally and started shouting "allahu akbar," would your first thought be, "hmmm... I should visit my local mosque". Of course not.
The fact that so many Christians can't grasp this basic element of social interaction is part of the reason why they've been unable to expand their sphere of influence beyond the areas in which they already have a hegemony. "!!!Boo hoo, the world hates us!!!" No, the world doesn't hate you. The world is just sick of your refusal to listen to anybody else. Rather than this being an effective means of "witnessing", it's really just another manifestation of the evangelical right's juvenile authoritarianism that can't lure people with its message, so it resorts to forcing them to hear it.