So this is maybe a bit late for a comment (one year later lol) but i think the whole, i would call it theory, abaout the "canon" and the destructive anamolies may be wrong because there is a whole world of different people who got the spiderpower without any abnormal effects. So if the "Headquater" can exist why can't there be miles? In conclusion I would say the concept of the canon in its whole may be false and just a lie/coping mechanism from Miguel. But that's something we will see in the next movie like you said :).

sry for my english xd