The formatting of lines was a render issue. Old coding v new coding, and it took time to fix. Despite what you see here, this isn't a high priority item for my employer. It falls below other changes, and that change falls way below some other bugs. It's a bug, it happens and every system I've ever worked on that had data migrations has issues. I know this was a big one for you, Jeff, but it wasn't a big one in my eyes.
The color coding is surprisingly complex, and SSMS does some weird things. It's part of the reason MS has struggled to update it (and the break coloring at times, too), and why ADS and other clients have struggled. Again, for most of our users, that color coding isn't a big deal. I know it is for you and some others, but that's your view.
Plenty of users, not heavy posters, though some of them, but regular users like the spread out cleaner format. I've listened to them complain about other views that some long time users preferred. UX is a very personal thing, it's also not my area. I prefer the oldest forums for many things, but we made a decision on changing this for a variety of reasons.
Not better is your opinion. I find this a wash. Some things are way better, some are way worse for me.