Can we please just solve the much bigger problem which is that ordinary people should not need to use any third party services to create, validate, and submit individual income tax returns. The IRS can and should be the provider of this software.
https://www.propublica.org/article/inside-turbotax-20-year-f...
The one thing that's good about land value taxes is (perhaps) that they correlate more with wealth, so politicians who get rich from the state at least have to pay tax for their fancy houses.
Check out 18F / USDS sometime.