This fellow has a lot more to gain than $100k by the popularity and prestige he'll gather from publishing this. Especially considering that Apple will never change their ways until they're publicly shamed, the long term outcome of shaming them is worth more than $100k if they actually change the policies to take security researchers and the bug bounty seriously
I would not consider Apple particularly concerned about shame in regard to bounty program delays in communication and publication, no matter how much people try.