That's an unexpected view. Security teams are experts in security and help application developers think of ways the product could be exploited. Security teams run pen tests and bug bounty programs. Security teams manage compliance.
Separation of duties is a critical part of building a secure system, and you can't have separation of duties properly if app developers do it all.
Don't think of a security team a punishment for when things didn't go as expected, but a good security team can help increase velocity and confidence and security all at the same time.
