Lost in the Log-Polynomial Expansion: Comment on arXiv:2101.08278
  In [1] we highlighted the fact that the log polynomial expansion employed in
Nature Astron. 3, no.3, 272-277 (2019) [2] is a poor approximation to flat
$\Lambda$CDM, so using it to infer deviations from flat $\Lambda$CDM is not
well-motivated. The "orthogonalized logarithmic polynomials" recently presented
in arXiv:2101.08278 [3] are an attempt to respond to the earlier criticism [1].
Here we demonstrate that this new technique [3] - interesting though it may be
- fails to address the fundamental problem raised in [1]. Unfortunately, the
claim made in [2] may still be lost in the expansion.
