Threaded, inline, hideable comments; scrolling through files -any progress since 2012 stackoverflow?

Have you done anything to improve chat and navigation to individual messages since this 2012 assessment:

https://stackoverflow.com/a/9281843/11321442

?

If the product owners do not already have a vision for improving chat UI, then my main request would be to just completely imitate Github's chat feature set - threaded, inline, hideable comments using a modern UI toolkit.