@Aaronepower responses below. A lot of this involves getting info from the respective authors. Don't hesitate to ping authors on issues to prod them to do things.
The OP of this thread is a wiki. You should be able to just edit it.
The main thing this PR did is eliminate runtime frames from stack traces by default. That aspect of the PR specifically was reverted for 1.17, and restored for 1.18, aiui. I don't know the PRs that did it though. The original author will know. cc @Yamakaky
There has actually been a great deal of activity, even if it isn't represented on thread. @michaelwoerister will know the status and have an idea of what timeframe it will land.
@jseyfried will know. I asked for status updates on thread. Seems like it won't make it for 1.18 if it isn't turned on by now.
I pinged @josh on thread to see if we can get somebody moving on this for 1.19.
Thanks @Aaronepower. Can you see if you can edit the op to punt these items to 1.19 as appropriate?
I pinged the libs team about 1.18 lib stabilizations.