Ultimately the mechanics of our matchmaking come down to "Starfighter spits a heck of a lot of signal about you at Thomas/Erin/Patrick; we try to decide if it makes sense to introduce to to clients and, if so, to which." All of us are working parents. We will certainly not penalize people for prioritizing piano lessons over being one of the first 5 people to crack a new level.
I won't commit to "I'll never look at time between a level is first opened and when it is solved" but, as somebody who has fed his family with code for as long as I've had a family, that strikes me as being among the least interesting things I could possibly learn about an engineer's ability.