I must have posted dozens of times with the expressed sentiment that language is fluid, should be allowed to be fluid, must not be in the hands of grammar police and must go with the popular flow. It's wot the people say, not wot grammarians dictate. You hit on a classic example in your post. The people who like to constantly rail against "splitting the infinitive" are not only wrong (people have chosen to routinely "split the infinitive" for hundreds of years with impunity), but they don't actually know what an infinitive is. The scholarly take is that a true infinitive is a single word, and you can't exactly split that. You'll have to look that up if you're bothered.

However, the sentiment that language should be fluid and allowed to evolve in no way excuses blatant errors and sloppiness. Ignorance should not be the driver of language evolution. Claiming that your misspelled word or inelegant phrase is all part of the language evolving is both ignorant and vexatious. It's hard to know where the dividing line is.