Random atavistic things? I hardly think relhaspkey is random. It's been there since version 7.2.
Exactly how does keeping it around slow you/us down?
My recap of the discussion thread:
That this has been around for a long time is not new information that was unknown at the time the decision was made. It was made in spite of that piece of evidence. It was decided that the leaving a "foot-gun" around for new people to use was a problem worthy of solving. It this situation I find the decision (given that no one is willing to make the field work as named) to be the correct one (by a not-wide margin).