So, I'm going to go with cost-cutting.
I checked out another 18' and 19' at my Boston office. The 18' had one, the 19' didn't.
I don't hear injector noise or anything from the cab, so good enough for me.
I've had the truck-let for just over a week and have almost 1000 miles. So far, so good.
Again, it's not my 2.0L Fusion, but is still peppy and gets up to speed just fine for me. I played an evening gig last week and all of my drum kit and elec. equip fit no problem.
A buddy has a 2018 RAV4 2.4L and I think this blows it away with interior quality and driveability. Reliability may be debatable, but management in my company get Ford vehicles and I haven't heard of anything major from colleagues with Fusions to Escapes to Edge & Taurus. Time will tell.