From conversations on this website about Apple's responsiveness/attitude to security researchers hunting bounties, I have gotten a contrary impression about Apple.
They are not perfect and not always as responsive as I’d like.
They issue security updates for their current OS and 2 versions before, AFAIK.
Is this your experience with Apple as a user or as a security researcher?
As a user interesting in security and following the field quite closely. I know about the limitations of their bug bounty program and some bad experiences some people have had with it. They still ship security updates to 8 years old devices and 3 years old OSes. Is that a problem?