Does it, though?
The Spurs unequivocally need more 3pt shooting - but not necessarily coming from the C position, and especially not if it comes at the cost of losing out on Jakob's elite defensive presence, which elevates the entire team around him. For one, unless he really, really can't get his foul troubles in check (which he's managed to do for the most part this season, at least compared to last one/the bubble), Poeltl is a starting-caliber player for sure, and benching him will greatly reduce his impact - and also weaken the main unit's defense, by a big margin. People sleep on it, but we don't really have all that good of a defensive SL: Dejounte is obviously the best of the bunch, and even he is prone to lapses and off-nights getting cooked by opposing guards; Lonnie needs no explanation; DeMar doesn't either; Keldon, while really strong against bigs and in general man-to-man, is a lousy team defender right now, and probably will take a few years to get better, if ever. Poeltl being there helps hide the entire SL's defensive woes, in the same way that having Bryn Forbes in the SL exacerbates the problem not only for him, but for the entire lineup.