So, you make $150K in salary for 10 years, and $1.25M in one year, for an average of $162K a year.
That’s below starting salary at Microsoft. You pay an average of $7K per year, and the Microsoft employees pay zero.
It is certainly not a progressive tax. If they time averaged it over ~ five years, it would be.
Another way to look at it is that they say it will affect 7000 households statewide.
It will affect pretty much all startup windfalls, so either there are only 7000 startup employees in the whole state, or they know this is going to be a windfall tax on people that have low average income.