I agree with this. But we won't have this problem until we get close to exhausting the mining-subsidy supply around the middle of this century, because one sat cannot reach one dollar (today's money) until the hashpower and subsidy balance to around one dollar per sat. We are far from that possibility today because we are no only constrained by supply-inflation and market forces, but also by mining equipment bottlenecks and energy availability. Once the value of a sat is on course to cause a transaction to be cost-prohibitive, let's say because a single-sat would potentially be worth an average middle-class household's month or year's pay, and the minimum transaction cost were to be clamped to one sat, then it may be worthwhile to further fractionalize the sat onchain, but until then, we are arguing the sexes of angels.