One possibility is increased monitoring. In the past, issues that happened weren't reported because they went under the radar. Whereas now, those same issues which only impact a small percentage of users would still result in a status update and postmortem. But take this with a grain of salt because it's just a theory and doesn't reflect any actual data.

A lot of people are pointing to AI vibe coding as the cause, but I think more often than not, incidents happen due to poor maintenance of legacy code. But I guess this may be changing soon as AI written code starts to become "legacy" faster than regular code.

At least with GitHub it's hard to hide when you get "no healthy upstream" on a git push.