For those who obsess over nuances such as semicolon appropriateness, you are of course correct in your insistence but wrong in your logic.
Language is communication, not math; authoritative attempts toward grammatical obedience leads to a cabal of ignored perfectionists, their collective pomp drawing the wrong kind of attention. Those using the language own it; if you find yourself outnumbered by those who refuse allegiance to the arcane rules of grammatical engagement, your only recourse is to use language as you see fit.
It is a gross assumption to claim that we commonly agree on the rules of language.
English is a voracious language and fluid in its spectacle. Most of the errors we perceive in our judgment of its usage tend to be the fault of the preposterous litany of illogical and capricious rules which allegedly govern it. Humans will never willingly pay homage to rules which betray the twin paths of practicality and reason.
When used with creative vigor, it is true that language is a beautiful governess attending to us. When used as a dead repository of grammatical obligations, it is a scorned woman yanking at her own hair.
Time teaches us that entropy destroys even the illusion of consistency in the form and content of our words. Grammar is the imagined road map to a place which no one gleefully visits, while spelling is the witchcraft of barking dogs in a canyon a mile distant.
Each language holds its own secrets and none owe allegiance to others or even its own previous incarnation. It all adds up to a frenzied verbal fist fight with usage always being the declared victor. We can weep at its frenzied evolution but we cannot contain it, even as our objections mount skyward.
If you doubt any of this to be true, learn another language as intensely as your first. Language embodies all the beauty and dismay of man himself.