Yep, more along these lines. Lots of people are latching on the "tax break" but I thought I made a larger point about where the $10b figure is coming from. That's part of my cynicism: Bezos gets to write a great headlines with big rounding number like $10b, but I wonder what kind of creative accounting will be applied here.
If he sold the shares first, he could claim up to the higher 50% limit. But he'd owe capital gains taxes on the sales, which is almost certainly more than the additional deduction.
You previously stated, "Bezos can avoid that limit," with "that" referring to either OP's or my statement about AGI deductibility limits, which is incorrect.
I think you might now be trying to make a statement about being able to claim capital gains as an AGI deduction without paying taxes on those capital gains? Which is true enough, but not responsive; it's just a fact that was never in dispute.
That said, I think GP is expressing skepticism that the total $10B figure comes from Bezos' personal fortune rather than being a spending plan for AMZN's business. The article doesn't exactly make this clear.