""Islamists would kill him (Ghandi) for that"

Possibly so-but, I suspect it would not have deterred him from reaching out and trying to build bridges?

However, the radicals need recruits. I suspect Ghandis approach would make it a a lot harder to get them and meld them into radicals. I suspect there are many reasons, historic and current, to build a case against those interested in controlling the Arab region, its people and its resources. This area was likely an incubation zone for radicalism.