Honestly, Apple is a 3.5 trillion dollar company. If the bug bounty program is understaffed then it's an intentional choice and they should fix it. And I say that as someone who's generally sympathetic to Apple.
Every organization includes a mess of situations where the overall best interest of the organization no longer comes through. Groups and individuals don't want to admit mistakes both personal and in wider senses and have alliances, competitions, team and organizational loyalty that twists their behavior.
A lot of organizations know they would benefit from having a proper whistle blower program and then proceed to crucify the first person who uses it.