Internet writing uses subtle punctuation choices to convey sarcasm and other tone of voice nuances. It’s not lazy.

Gretchen McCulloch wrote a book on how we write on the internet (it’s not out yet, but it’s available for preorders).

You know, the fact that for example the fullstop in the context of a text isn’t used to mark the ending of said text but rather to convey the addressee our utter aversion to their existence.