I’m not sure what your comment is referring to but maybe your example demonstrates part of the issue.
There may have been some burning of people by Christians back in medieval times but that was hundreds of years ago. Mainstream Christian views have transformed since then (despite PPs rather bizarre claims about not being allowed to wear jeans in America).
On the other hand, there is a whole list of many terrible Islamic practices that maim or kill many people and affect millions in various countries.
Some people who support those practices live here. They would quite like to import those practices and are making some headway in laying the foundations. There are already 70-80 sharia courts here. They apparently have limited ‘jurisdiction’ at the moment but we have already seen how ready the authorities are to turn a blind eye and the willingness of some to exploit that.
Our laws are only as good as our level of enforcement. If we allow a parallel sharia ‘legal’ system to be established, the boundaries will keep being pushed further and further until our legal system is fatally undermined.
There are many Muslims who have come to this country to get away from the extremist practices. They want to live quietly and harmoniously alongside with us in mutual toleration. We would be letting them down as well as ourselves if we allow criticism of any aspect of the religion to be shut down.
There are always going to be extremists pushing and weaponising our laws against us, we can’t allow ourselves to be silenced - then they will win.