<Resulting in META with the above assumptions being only half as expensive as BRK and a far better buy.
So much so that even if their Growth slowed to 10% they would still be a better buy than BRK.>

I would just highlight this passage from Chris Bloomstran's most recent annual report regarding META...

"Meta spent $32 billion buying back shares in 2022, $9 billion more than net income! And it's not like the company just invented share repurchases.
They spent $50 billion in 2021, again way more than profit and nearly all cash produced from operations.
2021 was spectacular. On $50 billion spent buying shares back, the share count declined all of 3.8%.
It was the first time the share count actually declined despite sizable ongoing repurchases since 2017.
You see, Facebook, I mean Meta's management perfected the (age old) craft of paying themselves a mountain of shares and money.
This is what you do in what is apparently called a Metaverse." ~Chris Bloomstran

How does a shareholder make out over the long term when the company he/she owns basically:
uses all earnings (and more) to buy overpriced shares and then gift those shares to themselves?

Seems to me Mark Zuckerberg and Canada Bill Jones may be kindred spirits...

"It's immoral to let a sucker keep his money." ~Canada Bill Jones