You do know that they want to drastically simplify the tax code, correct? From @DOGE itself:
In 1955, there were less than 1.5 million words in the U.S. Tax Code.
Today, there are more than 16 million words.
Because of this complexity, Americans collectively spend 6.5 billion hours preparing and filing their taxes each year.
This must be simplified.
What do you think they're proposing instead, specifically? Creating a duplicate tax app? That hardly sounds like a department of government efficiency proposal.
Just about every politician (and they are politicians now) says they want a simpler tax code. Those statements do not appear to correlate with results.
American taxes are probably too complicated to do that in general. It might serve for about 50-60% of filers, but that's a lot of people who would have to adjust it.
It might well be worth redesigning the tax code in order to make that simpler. That would be a lot of work, because we've spent a long time tuning the tax code to encourage and discourage various behaviors. Cutting those off cold turkey would really leave some people in the lurch. But in the long run it could be a significant improvement.