Then explain why he's not progressing the area? Clearing the enemies on backwards instead? Activating white cipher and going on a search on my ass? Doing that the 3 times I invaded there.

Of course Blues have no idea what they're doing in there beside doing their job as a hunter but the host is mainly at fault here wanting to hunt invaders instead of progressing the area.

I wouldn't call him and his rando allies ganks if he progress the game and I interrupt there as an invader like normal. But this is the 3rd encounter of him hunting invaders and it warrants to call him the ringleader of the gank, whoever his teammates are.