absolutely, not sure how suddenly observability is becoming missing critical when system admins have had strong observability for decades.
Because most devops folks were not sysadmins. #everythingOldIsNew
have they though? i for one remember the "golden days" being much more about checking specific values for things you already know could happen than gathering telemetry to be able to ask questions you never would have even thought about asking at the time you set it up.