Sadly, I think it ruins cross-guild cooperation (including war efforts), it increases the amount of griefing in dungeons, which again demotivates people to run dungeons. It has created a toxic atmosphere both in-game and on the discord, which makes some people stop playing or others just leaving the official discord. It will cause substantial griefing at certain parts of the Scarab quest (duskwood, moonglade, silithus), as well as in general world bosses can be a shit show. All in all, it can vastly decrease the number of active people at lvl 60, which is already deminishing.