Here is the rich individuals version of things: https://taxfoundation.org/rich-pay-their-fair-share-of-taxes/#Burden I was reading about how one billionaire has a Roth worth 5 billion by using a back door IRA. Then theres the true up of basis upon death on investments.
I believe the guy with the big Roth account you are speaking of used his founder shares in a company. Not something the average person can do. The article you posted is about the status quo. Fifty years of trickle down is the reason why there are so many that don't have a high tax burden.
Not sure why $600, or that the IRS would even want that. Sometimes I wonder if things are put into a bill so it can be yielded in the bargaining.
The reason I don't talk about money is, I've never had enough to talk about it! But contentment is priceless!
I wasn't proposing that as a tax strategy for the average person, just sharing some of the interesting ways the rich avoid taxes.