There is no reason to be uncivil - or arrogant.
I think it's perfectly fair to wonder why two aircraft are vectored like that when there is evidently room not to. Is there not an issue with wingtip vortices from "heavies"? How much vertical and horizontal clearance is needed for a following aircraft to avoid these? I have heard pilots in the past on 120.4 comment on turbulence as a consequence of following a 747 down the glideslope into Heathrow, so I'd have thought an A380 would get quite a bit of elbow room on the way in.
I clearly have *some* understanding of what is going on - my "squish" comment comes from a vague memory of something changing, which was actually the 3.2 degree slope trial to do with noise rather than capacity.