I agree.  The bishop could deal with Pavone if he had the integrity and will to do so.  Pavone is a right-wing nut-job, financed by wealthy right-wing nut jobs, and thus the bishops are intimidated by him.  The stunt with the fetus on the altar was a campaign ad for Donald Trump -- nothing more, nothing less, nothing else. The stunt itself may have made the bishop squirm a little bit, but there seems little doubt that many American bishops, probably most of them, endorsed Pavone's endorsement of Trump.  
It's a shame that so many Trump voters claimed the "pro-life" tag in support of the most militantly anti-life, pro-death president in history. It was and is an Orwellian abuse of language.
Meanwhile, the bishops' approach to LGBT persons, families and issues is -- with some individual exceptions -- also anti-life, tragically so.