Jack Dorsey may have left Twitter’s troubles behind, but he’s still getting into trouble on Twitter, where he has been incessantly replying to random posters and retweeting his support for Robert F. Kennedy Jr., the anti-vaccine activist and Ukraine war crank. I have learned that the endorsement hasn’t gone over super well inside Block (formerly Square), Dorsey’s publicly-traded payments company, which he runs as C.E.O. Indeed, the R.F.K. issue came up last week during a skeptical exchange at an all-hands meeting, according to a video I’ve seen, in which Dorsey was asked how endorsing Kennedy is “in line with Block’s mission of economic empowerment” and how he could “reconcile that against his track record of conspiracy theories.”