Speaking as someone who has to reach for the remote control as soon as McIntyre appears, I think the difference between this annoying cretin and other comedians is that people don't seem to think "oh yes, Michael McIntyre, he's quite good". He's a real love him or loathe him person.
Whereas there of plenty of comedians I don't find particularly funny, I can't think any others who makes me stop watching any panel show in which they appear as McIntyre the Cretin does. If I found him even half as funny as he finRAB himself, I'm sure I'd be rolling in the aisles.
In the end, fair enough that some people find him funny. He just has a manner that irritates a lot of people as shown by the response to this thread and the fact there are no similar threaRAB for Russell Howard or Dara O'Briain or other modern comedians.
Its just damned annoying that he is so difficult to avoid at the moment. The BBC should recognise that enough people can't stand the cretin so should restrict his appearances to his comedy roaRABhow which has his name in the title so you know to avoid it.