There is an important finesse point here. Constitutional amendments *by themselves* do nothing. They must have “enabling acts” to function.
This is best known with Prohibition, which itself did nothing until its enabling act, the Volstead Act, was passed. Importantly, president Wilson tried to veto it, and was overridden by congress.
Trying to overturn the 16th Amendment would be extremely difficult, compared to overturning its enabling acts.
And here’s the zinger: if congress chose to do so, it could so thoroughly reinterpret the 16th Amendment with its new enabling act, that it would effectively *end* the income tax, and replace it with some other form of taxation.