Originally Posted by
Ibi
People don't like this particular piece of lore because it doesn't fit with the rest of the lore that had been established around the subject of the Grand Companies. It appears to have been created specifically to justify a particular (and mostly unpopular) mechanic.
Everything we knew about the Grand Companies prior to Frontlines indicated that they've been on very friendly terms since they reestablished during the previous Umbral Era. We know their leaders are all on friendly terms. We've seen examples of members of various Grand Companies, and the Grand Companies themselves, working together to further their goal.
But SE wanted to tie Frontlines to GCs, so they went "Er... yeah... it's different in this one place because... um... reasons...?"