It was never meant to be a global Trade/Barrens chat. People have been getting sanctioned more and more, as well as they should be, for all the excess chatter. And, it only takes a single report to flag up a GM review.
LFG is …wait for it now… a channel to look for people to fill groups. Not guild adverts, not boosting services, not jokes or politics. Just because they used to let that behavior slide does not mean it’s okay or allowed. They’re cracking down on rules across the board. Players are sick of the spam chatter where it doesn’t belong and are rightfully reporting it. And people are rightfully getting sanctioned for it.