I would suggest that you are almost certainly in the top 5% on complexity of your tax situation between the roboadvisor, the house, and the EV, if not all of the other things that you are spending 8 hours on. You may be in the top 1% on number of pages in your federal tax return.

Personally, I would love a flat tax, although I would probably pay more under that system. It will never happen, though.