But again, what makes you think Hypatia's killers were fanatic, as opposed to being like mafia enforcers sending a message to Orestes? Hypatia's mistake was being the only major player who wasn't traveling around with a large team of bodyguards, making her an easy target.
Second, did her killers remotely care what religion she was or what school of thought she belonged to? Probably not, or they'd have killed her decades earlier (she was somewhere between her mid-40's and mid-60's when she was killed), as she freely associated with Christians, Jews, and pagans. She was, however, in a position to get Cyril and a bunch of his followers killed by Roman forces, and both Cyril and Orestes were sending letters of protest on up the chain trying to resolve their issues. At some point Cyril or his followers concluded that she was poisoning those efforts.
If her murder had
been because of her teachings, then her colleagues and students wouldn't have kept teaching the same subjects in the same city, which they did.
So it doesn't matter if her killers are described as Christians or anti-intellectual fanatics, because that narrative is relevant only for modern political ends and has almost nothing to do with what happened to Hypatia.
You might as well argue, after Cosmos remake IV, that it is significant that the show didn't refer to Lee Harvey Oswald as a Texan, since it called him an "anti manned-space-exploration fanatic." It's so far out in the weeds that it's a debate that shouldn't even occur.