I really don't want to get into a pointless debate over prescriptivism, and there is no other kind of debate over prescriptivism. But, here, have some authorities:
Wiktionary: https://en.wiktionary.org/wiki/antisocial
Merriam-Webster: https://www.merriam-webster.com/dictionary/antisocial
Oxford Dictionaries, English - as close as you get to OED without paying, and my library card's at home: https://en.oxforddictionaries.com/definition/antisocial
How many more would you like me to cite? And what's your problem with "poignant"?
Says who? It's one thing to invent a brand new word, but it's another to modify a word with already established meaning to a slightly different meaning just because some people started using it the wrong way and it stuck. See the word "poignant" for another great example of the active bastardization of English.