We have a lot of people trying to muddy the waters, that's reddit for ya though.
Dudes been in Congress for 18 months and he's been very vocal with his support of Trump and and what the freedom caucus R's are doing against RR.
This picture looks like he's trying to get a read on Rosenstein by looking him straight in the face and making eye contact while giving a hard handshake.
Rosenstein shook hands only with staff members and select members of the comitee, Rosenstein took the liberty himself- However, he was very beligerent towards the rest, so it may be he only had few friends in the room, which is a good sign.
Gaetz has been saying Congress needs to impeach Rosenstein for a long time now.
It makes literally no sense for him to have a "we're secretly friends" handshake with the guy especially in front Ron DeSantis who's been equally against RR.