Doesn't show any automated verification of code in deployed fashion, no load tests or verifications which would be part of a world class pipeline. Also no canary or red-blue tree type rollout hooked to sentry. At least it has a staging but don't know what they're using it for other than to test migrations before promoting to prod. Nice little write up but far from world class.
Acceptance testing the system once deployed is the cornerstone of organisational acceptance of the CD doctrine - errors will always happen, it's just that they can now be fixed much faster in production.
Using an acceptance test suite as a deployment safety harness should dramatically increase the quality of tests, and hopefully the application too.