Not until the definition of the word “of” changes.

Well that’s what’s happening here isn’t it. It’s a word that is potentially gaining an additional use as a result of reanalysis. Whether it sticks around long term remains to be seen, but language is defined by usage and it’s foolish to pretend there’s such a thing as objectively correct. Already the use of the verb ‘to have’ to form the perfect in this case is quite different from it’s other meanings related to ‘to possess’. And that’s not even getting into you describing nonstandard usage as the result of ‘mush-mouthed laziness’ which is a whole nother can of worms.

ITT: Awful linguistics takes

People writing of instead of 've is pretty well attested before Siri even existed so I doubt that has much to do with it

Pretty sure it’s actually one of those mistakes that is made more often by native speakers than non-native speakers