Apparently, there's no difference between 400 ping and 100 ping, as the game works in 500ms intervals so the effect of ping only changes with 500ms intervals; so ping would have to be over 500 to appear any different to any ping below 500.
However, ANZ players with pings decently below 500 constantly get kicked from matches with the message "Reason: Ping" by European hosts, presumably with the logic "They're on the opposite side of the world, they'd single-handedly ruin the ping for everyone else".
And while it is true that we're on the opposite side of the world to Europe, it doesn't matter, unless somehow the ping does actually get above 500 (which would require unusually bad internet)
So, could we have a loading screen hint that mentions that unless someone's ping is showing in the lobby, ping has zero effect on gameplay?