It is suspicious. It looks like this may have actually happened and they are afraid the man is going to lawyer up and tell people what happened. So shill accounts need to get into people's minds first and anchor (the cognitive bias: anchoring bias is is the tendency to rely too heavily—to "anchor"—on one trait or piece of information when making decisions (usually the first piece of information acquired on that subject).) the idea that this man was unhinged and threatening Joe Biden with violence. I am not going to accept the word of some Internet rando about that.