[Emphasis mine]
Vlad, you are living in a very different world to me.
GitHub has suffered dozens and dozens of outages since the beginning of the year. It is notably less available and reliable than it was even as recently as last year. People have created dashboards and heatmaps showing how bad GitHub has become. At least one of those has made it to the front page of Hacker News. In fact its unreliability and persistent availability issues have become a frequent topic of conversation across sites and communities frequented its users - of which HN and Reddit are two obvious examples. At this point GitHub's unreliability risks becoming a meme, if it hasn't already done so.
The only thing your post makes clear is that your priorities ARE NOT clear.
> Our priorities are clear: availability first, then capacity, then new features.
WRONG!
Your priorities are:
1. Availability 2. Availability 3. Availability
You have NO OTHER PRIORITIES.
If you want other priorities, focus on AVAILABILITY for 6 months and then come back and we can all have a serious conversation about something else.
In the meantime, you need to understand that GitHub's reliability over months and months - not just in April - has been completely unacceptable.
Focus on fixing that and on nothing else.