It’s a win-win for them. They can let genocidally anti-Muslim rhetoric on while keeping their selectively pro-Israel content policy, getting support from the burgeoning far right in the US and Europe while suppressing the anti-establishment element of it that happens to be the most anti-semitic and anti-Israel, and avoiding the scrutiny of the AIPAC-bought Congress and White House that they’re letting hatred of Israel proliferate by letting Palestinians use the platform.