Moreover, these discontinuities and the perverse incentives that they lead to on the cusps have been elements of these programs for longer than I've been alive.
Depending on how long you’ve been here, you may have been living under a Reagan-esque conservative regime the whole time. Over my entire life I’ve seen only actual republican policies, or policies of weak-minded Democrats easily baited into acting like Republicans. There hasn’t been a sincere and effective advocate for the poor in America since LBJ.
You're being downvoted but you're correct. A glance at some of the potential Democratic presidential nominees tells the whole story: Biden (classic case of "weak-minded Democrats easily baited into acting like Republicans"), Warren (actually was a Republican, during the Reagan years no less!), Buttigieg (previously a firm supporter of M4A then was somehow persuaded to water it down to "Medicare for all...who want it") ... Bloomberg!