that is because you are left leaning and therefore you'll not have common ground with Johnson. You also ignore the crux of my point entirely. Johnson never criticises anyone else for their own perceived (lack of) moral compass, which means he doesn't leave himself exposed for the same kind of criticism Starmer now finds himself subject to. If you are going to claim the moral high ground, you really do need no skeletons in the closet.
I quite like Starmer, but if he is issued with a FPN, its going to be hard for him to remain in post.