I disagree. It does make sense. It's the logical conclusion to "income" tax. There are people who run a full-time business of selling on eBay, all the way down to me maybe selling $500 worth of stuff over a decade. At what point do you make the cut from "income" to "just clearing out the barn"? The IRS is already all up in your business, so why is a $600 cut-off any less valid that $6,000 or $60,000? Why shouldn't I be forced to report the $125 I made off of selling some shell mills over the past week, when I'm forced to become an account next April 14th?
The same applies to local governments shutting down children's lemonade stands (which has happened), because they don't have a valid business license. It's dumb. But, it makes complete sense from a robotic enforcement of the law perspective.
$600 is ridiculous because no profitable business has sales that low, leaving it at the $5,000 level that they plan for 2024 is much more realistic. The GAO estimated 30 million new 1099s would be sent out this year, this is capturing millions of people selling personal items that they are now going to have to remember, and document, what the items cost so they can deduct it on their income taxes. It is a paperwork burden that will not significantly increase revenue for the government at that lower level.