I am convinced that most people, regardless of age, have no clue how to construct a proper sentence. They make up punctuation rules as they go along, randomly capitalize words mid-sentence and post images that causes anyone with any level of knowledge or intelligence to simply shudder.
What I am not sure of, is if they do this because of a lack of education or, if in fact, they sit on the toilet and work diligently to fabricate these abominations of the English language.