I spent 12 months on COBRA when I started my startup, and while I didn't enjoy paying close to $2,000 per month for insurance I couldn't buy a comparable plan on the open market for my family for less.
Presumably the existence of COBRA is meant to assist people experiencing a hard time with health coverage. It does not achieve that purpose. If insurance itself is prohibitively expensive that mediating it through COBRA means people are unhelped by COBRA, then replace COBRA with something that pays the cost of the coverage. Take your pick of many options, but shifting the cost burden onto someone who was told to structurally depend on it being tied to employers is not a thing. It’s a non-thing that does not count as an assistance or benefit.
It’s like if you lost your job and suddenly now breathing oxygen costs an extra fee, but it’s OK because you can just pay the oxygen fee you were forced into letting your employer pay on your behalf.
Any analysis / estimate / policy that starts from any assumption of the existence or usage of COBRA is therefore so unrealistic and inaccurate as to be completely ignored.