There's little doubt the English language has evolved and, some argue, is always evolving.
However, grammar and syntax rules for a human language are essentially no different than rules for a computer language. The rules are set to establish use and understanding.
If I, suddenly decided, that every, second word, should be, separated by, commas then, it would, make this, sentence much, tougher to, use and, understand right?
The rules can be archaic at times, but no less useful and necessary. Language efficiency is important. However, the language becomes less efficient if everyone is working from a slightly different set of rules, and it becomes near useless if it takes even longer to use and understand what is being said.