Nice, thanks for digging up that thread!
I’ve come to the same conclusion.
One suggestion that I think could be a solution to this issue (well, a bit of a “hack” rather):
Offer a regex replace/rewrite feature for the description/content fields.
The original jpeg is still present in WordPress. I think it could be as simple as replacing the .webp extension of all img elements with .jpg.
Perfect feature to add as a part of the Premium package ??
