Not only development of PA itself.

Since the message that PA was here to stay was received, everyone got the point that the only way forward was to fix all the buggy audio drivers. It's no surprise, that it helped. Sure, it sucked for the affected users at the time, but in the long run, we all are better off.

I believe it's because we know who is now concentrating on systemd. Maybe in 2080 that will be flawless too. Even usable perhaps? :)