Ok you answer in your own words since the other two obviously don't have a valid reason and decided to just ignore this question but are happy to respond to everything else
Nonsense. I've made my opinion clear numerous times. Didn't seem worthwhile to go through it yet again.
In a nutshell, The SegWit Omnibus Changeset is about the worst imaginable solution to a nonexistent problem.
Malleability is fully understood and is not a pain point.
If indeed a fix to malleability is desired (a debatable point), separating the signature from the remainder of a transaction is a worthwhile candidate for consideration.
But the gyrations required to make this a (*ahem!*) so-called 'soft fork' has fundamentally undermined the entire security model of the system.
That's not even starting with the cruft other than segwit which was bundled into The SegWit Omnibus Changeset.
Ultimately, this entire escapade pushed back a scaling solution by two years, and has led to a premature crest of the last wave of adoption - also likely pushing back the next wave by perhaps two years. Hopefully, this black period does not provide a big enough opening for the vampire squid to prepare a meaningful counterattack. I have my doubts. Time will tell.
I could go on, but that will suffice for a start.