I think stereotyping is part of the problem and certainly within religion, because religion is so often a factor where there is intolerance. Fueled sometimes by self serving intransigent patriarchies designed to keep their supplicants compliant and in their place. Always a significant problem and it's men who make up the hierarchy of the three Abrahamic faiths
As with the conflation of Jews and the blame they must bear for all the ills the state of Israel inflicts on the people of Gaza. Similarly the rise in Islamaphobia for the majority of Muslims is an onus they too seemingly have to bear, firstly with terrorism. Since 7/11, 100 people have died in this country alone from such acts, not to mention those who would have been seriously injured and some of those who perished in the London tube bombing would be Muslims themselves. Some of the first responders, such as the umpteen paramedics and doctors who saved lives would be Muslims too, but for those who have the mindset, the whole religion/people are terrorists that vision will be set in stone, murderers all!. They would never acknowledge they could be the life saving doctors, because that's not how a racist brain is wired.
Having a phobia about being caught up in an act of terrorism when such attacks are at their height is not completely irrational, I certainly had such a phobia when I worked up in London when the IRA were at the height of their terrorist campaigns.
Another factor that has cranked up Islamaphobia has undoubtedly been the grooming gangs, and the racism those men directed towards their white victims. I've heard it said that racism can only work one way, and you can't be a victim of it if you happen to be white. Pull the other one! I think that's a complete misnomer, most ethnicities have some form of it. The main failure in alleviating perceptions surrounding prejudice, are the useless successive governments who have skirted around the issue, worrying more about social cohesion, which they've actually made far worse, through not dealing head on with an ongoing problem because they made cultural sensitivities paramount. Not listening to the honest on the ground people such as the late Labour MP Ann Cryer who for her efforts in calling it out was labelled a racist herself, just one example. All of this has fanned the flames of Islamaphobia.
Just to conclude before anyone jumps in, of course it's as unfair to expect Muslim communities to bear the collective culpability of these events as it is to target Jewish people for the worst excesses of the Israeli government.