I just can’t agree with this statement, on the information I have available at the moment. Johnson was never PM for anyone but himself, and has never been anything but out for himself. Starmer has at least in the past been on the good side - his current incarnation of not upsetting any apple carts is hardly edifying, but politics is a volatile and difficult place at the moment, and I’m not sure what a better course to steer would be. The right-wing press are still poised to rip into anything that looks Corbynite, and that was simply too anathema to too many people.
In my opinion, of course.