Only if you believe those numbers mean anything. What are the errors
for? Github has been adding lots of features and subproducts over the years, becoming a bigger and bigger platform as a result. What you want is the error-per-component, which may very well have actually gone down, with error spikes coming from "when github adds a completely new feature and it goes through a slew of incidents in its first year". The bigger the feature, the more incidents.
Without more detailed numbers, there's literally no conclusion to draw here.
