I've debated with lots of Jeremy Corbyn's supporters. Except that “debate” is the wrong word. It's impossible to debate with people who believe that Corbyn must win "by-any-means-necessary”. It's bad enough trying to debate with Marxist socialists at other times. It's almost impossible in the run-up to this election. Such people automatically think you're a “Tory” or a racistfascistNazineolibknuckledragging bigot. And that's on a good day! All their opponents are evil or “enemies of the people”. If they're well-off right-wingers, then they're evil “exploiters of the poor”. If they're working-class right-wingers, then they're “gullible Uncle Toms” with false consciousness (they don't use that phrase) who're “traitors to their class”. You literally can't win with these zealots.
Corbyn is certainly an even greater appeaser of Islam than Theresa May. He's supported Hamas, Hezbollah, Iran, Muslim preachers and jihadists in the UK, etc.
Corbyn will take zero action against the ever-increasing number of Muslim ghettos, Muslim immigration and he'll even - despite the Corbynite hypocritical bullshit about Theresa May being “weak on terrorism” - take no effective action against Islamic terrorism. He'll take some action against it: such as having tea with ISIS supporters, attending interfaith meetings and suchlike. However, he'll take zero effective action. After all, the Labour Party is now partly reliant on the Muslim vote. And Muslims often vote in blocks according to village/tribal ancestry (as well as for other reasons).