Had read the article before reading your post -
the being embarrassed part I believe in totally,
but was surprised on the estimate of included unresolved copyrighted parts.

Myself angling more to any SW with at least visible/readable sources,
knowing that I probably will be unable to fix problems in the best place or manner ;-)

Chances are those projects span multiple OS, which I prefer:
aiming since last century on not getting caught in vendor data formats

>https://www.theregister.com/2022/10/04/you_cannot_buy_software/