This is actually not correct - the query is supposed to be who created an account in month X and made >= 5 edits ever. But, if we can't make that kind of query performant enough... are you ok with this change, Kenan?

Oh that's really interesting.  Both Jon and I thought this must've been a mistake.  I think people are likely to confuse this with the active editor metric.  Well, either way, neither is more performant than the other.  I can try to tune the query as originally intended if you'd like.