"... In the two years since the acquisition announcement, GitHub has reported a 41% increase in status page incidents. Furthermore, there has been a 97% increase in incident minutes, compared to the two years prior to the announcement..."
Maybe they got funding for a proper incident team? Or changed the metrics of a incdient is, maybe the SLAs changed to mirror MS SLAs?
Also Betteridge's law.
GitHub is stronger now then it ever has been.