I did not go through his statements, but I see dougz has clarity on AMT and he knows what he is talking !
There are plenty of references in internet about AMT and most Californians are getting into AMT due to high State Income Tax or Stock options vesting etc.
Read his statement.
Google results = “If you are subject to AMT, your tax bracket is 28% for AMT taxable income over $175,000. But your effective marginal tax rate is typically 35% for incomes of $300,000 to about $500,000.”
For those with 33% or 39.6% marginal tax rate, AMT is less at 28%. People at 39.6% MT level, pay higher SALT and it adds to MIRD (1.1M level) brings down the effective tax at 23%. AMT kicks in when calculated tax is less than 28%.
As I said, dougz knows in detail about AMT and he is 100% right.