…in this podcast.  The Swedish moral philosopher Torbjörn Tännsjö (also in the podcast) writes:  

Peter Singer and I have had similar views on many topics, but while he has been a prescriptivist I have for decades been a moral realist, and while he has been a preferantialist, I have also for decades been a hedonist. He now agrees with me on both these accounts. The latter should be of importance for his view on disability. We discuss this at the end of this podcast.

Now Professor Singer has two more mistaken views!

(Just to be clear, Singer has embraced these views in print previously, but now it's official, since it's a podcast!)