Doubtful that Kermit Peterson was giving honest tactical advice to the left here, but he does have a point: “cis” is pretty bad branding when the biggest social group that slows down trans rights is the red-meat alpha-male boomers for whom “sissy” was the ultimate insult of their teenage years.
Petty and eyeroll-worthy? Yeah. Also an unforced error on the part of trans rights? Probably.