This is about the dynamic between people within the organization (coworkers, boss, etc.), not about external communication to customers. That is, we aren't talk

This is about the dynamic between people within the organization (coworkers, boss, etc.), not about external communication to customers. That is, we aren't talking about whether an individual software engineer should apologize to the customer or the end user. So the analogous question would be whether someone who has worked as a plumber has ever heard a coworker plumber apologize for messing up a job. I'm hoping the answer to that is yes. A plumber apologizing directly to a customer would be more analogous to a company making a public announcement about a bug, which is a different issue than how responsibility is determined within a team.