When Buxton hit for Wallner, my first assumption was that we might indeed get an inning of Buxton on defense, with Taylor to left and Larnach to right. That they didn’t go that route tells us that they are NOT going to play Buxton on defense for a time, under any circumstance. So then, a straight substation for Taylor would have left them with an outfield defense that’s only about one step above the time they used the Turtle in center. Probably Larnach-Gordon-Wallner around the outfield and with some version of Miranda-Farmer-Castro-Solano around the infield.
I wasn’t too worried about losing the DH. Even if you start from the time Buxton hit, that spot was 10th in the order. As it played out, it was sixth in the ninth, which either means bases loaded and two outs or that you’ve scored a run or that you’ve already won (or in this case, lost) it. And I assume they would have pinch hit Jeffers at that spot if it gets there. With the Manfred Man rules, there’s virtually no chance of getting to that spot a second time.
I think that what they did and what you are suggesting are both pretty defensible. Bottom line is that they were in a game that they probably shouldn’t have been, given the lineup they had with Cease pitching. At that point, you’re pretty much rolling dice. Without three Sox errors, we’re not even having this discussion.