See comment on bugs. Our releases are "frictionless" too, but yes, I am hard-pressed to even imagine 3000 improvements a month to any major brand that comes to top of mind.
Bugs? Roll back. Bugs are generally proportional to LOC, not number of deploys - given that's a DevOps variable and not a programming one – so the only relevant difference I can imagine is less chance of a multi-bug, multi-factorial, multi-dependent, nightmarish-to-fix incident.
Depends on the perspective. Adding one data field to a Kafka record, or Protobuf message, or Bigtable cell, or Postgres table is already an improvement.
There is already so much work to do consuming data from A, transforming it, and storing it into B.