Im assuming you are distincting between people doing a weird freedom fries bit and people who just dont give a shit about capitalization on an internet post
I often do it because it's an annoying custom in english to capitalize some nouns and not others. america, china, russia, australia all recieve lower cases because I don't care to hit the caps key.
If my autocorrect doesn't do it for me I don't care about capitalization or apostrophe's. Also I won't correct it when its wrong. Commas are used if I feel like it.
I generally do care about apostrophes and commas because they are useful to show the delineation of my thoughts. They do serve an actual purpose. Capital letters, although useful for starting sentences or capitalizing "I" for the first person pronoun, don't represent an actual linguistic concept, just a formality in English to make some words seem more important. Other than that it's only worth anything to distinguish polish and Polish, and even then context does the job better.