Yeah, I mean, for obvious reasons, my character isn't joining in the "we persist" mantra, so I don't have a horse in the race. But it seems like the perfect thing to say, perhaps even especially, in defeat. Like "we persist" is something I imagine cockroaches say to us in spite of our attempts to exterminate them.
So while I get that it might be annoying to some folks, it is what a lot of our RP is rooted in, and our "Tenacity" "Persistence" "Undeath" Idealism we represent from an RP standpoint.