Parser in itself isn't bad but many use it to cause negative experiences for others.

Hunt radars I don't think have been a thing since ARR because people like me renamed their chocobo after an A or S rank and would run around the area where said hunt mark would spawn. I flushed quite a few out by summoning "Marberry" on multiple occasions just to watch 5+ people show up in my corner of the map within minutes.

Bots have always been a bane on MMO's. However the most effective ways of combating them aren't legal in some regions.