If you are going to exclude people with deluded ideas from politics then that rules out most politicians.

In the context of the British constitution, which has a second chamber whose role is to bring wisdom, experience and expertise to the legislative process, then that chamber should be drawn as widely as possible. Even if bishops did not sit as of right it would be extraordinary if some were not included for balance.

What happens in other countries, with different histories and different constitutional arrangements, is a different matter and quite possibly has different answers in each case.

What I find most objectionable is not the criticism of religion, much of which I agree with, but the idea which some people appear to hold that only viewpoints which they agree with have a right to be heard.