He's going to spend a lot more time and energy installing and dealing with FreeBSD than he ever spent telling OS X to leave him alone. There are plenty of good reasons to use a free operating system, but these days "reduction in time spent" is never going to be one of them. Running an OS that is not pre-installed is always going to be burdensome.
It took him plenty of time just to select all that hardware--and then he had to actually put it together. And if anything doesn't work--good luck.
I understand what he's saying about focus but as an experienced user of free operating systems I can say that there are many things with them that can cause you to break focus. Already the post has discussed (0) problems reassociating with wifi, (1) bindsym to get the thing to lock when the lid shuts, (2) no satisfactory password sync app, and (3) bad copy/paste.