First you say that listing all the options is a nonsense a embarassing and then you say you have users that use the wrong architecture to download? That is a double moral, if you have friends that wrongly download PC/Mac games on Android/iOS for example and it doesn't work, you should teach them in which devices with their respective platform works correctly for that software.
And yes, the analytics of itch.io in downloads should be updated and shown as in IndieDB / ModDB, because there are even people who look for a PC game without really knowing what is a "PC".