I don’t think I have ever used lol, but I have no real objections to any text speak.
Language has always been dynamic and neologisms pop up constantly. More confusing is when words change their actual meaning and it takes a while for society, and therefore dictionaries, to catch up. So the words ‘dirty’ ‘wicked’ and ‘sick’ now can all mean ‘good’ for instance. It’s confusing, but not a new thing at all; did you know that the word ‘nice’ used to be the word for describing a person who was stupid or foolish?
When writing letters (in the distant past, before email and text were ubiquitous) I also used tee hee to indicate something humorous annepl. Now we have this little chap to do it for us. 