Watch this:
Look at the body language. Look how close the grey-haired guy was to Matt Gaetz, mere inches from his face, using strong hand gestures.
And Gaetz was clearly displeased about the conversation. But also submitted to the guy completely and let him bark all in his face and put his hands on him.
I'm not saying it was a threat, but I am saying it looks very much like one man threatening another man.
All Gaetz said was "OK."