They don't think that's the point, which is what matters. They clearly have limits to free speech that you don't have because they are not free speech absolutists (like most people) while you are a free speech absolutist. They probably draw a limit at speech that they consider harmful[1], as most people do. If most people didn't have these limits, then harassment, death threats and so on would all be generally acceptable and legal, but they aren't.

1. https://en.wikipedia.org/wiki/Paradox_of_tolerance