a simple solution is a solution to the problem, it's redefining the problem in such a manner, to make the solution possible. It's called compromise. A thing that exists in either one of these situations. In complex solutions you compromise by making a shitty solution mostly cover a shitty problem, in a simple solution you make it comprehensively cover the problem, and in a simple manner, but it doesn't cover the whole problem, because the problem is simple.
The problem here is that tax is overwhelmingly complex, we just need to forcibly simplify it in a manner that makes it more functional, and more apt, while not losing too much control. It's absolutely possible. It's just scope control.