You want me to enumerate the potential experiences a tax lawyer may have, outside of having hundreds of clients with a net worth of 300M dollars, over a 20+ year career, that would allow them to do the math outlined in the post?
There's plenty of valuable information on reddit. In fact, there's a strong search trend to put 'reddit' on search queries to get better results.
Could this guy be LARPing? Sure.
I looked up a few of the references, they look accurate. They would need to be an excellent LARPer to get that detailed. Or they actually know what they are talking about.
So this one random lawyer on reddit has hundreds of clients with a net worth of $300M+?
Or, they're LARPing.
I wonder which is more likely.