"There is no scientific experiment that demonstrates that anything under the sun is good or bad."

This early premise for your discussion bears some examination. And science has, in fact, made the lives of much of the world better (more good) for all of history. Are you suggestion that vaccines, the wheel, electricity, the production line, etc. etc. are not inherently good? I won't suggest that all science is good because there are side effects and bad players that misuse whatever is available to them, but man's progress, civilization's progress, is science based. The assumption that applications of scientific knowledge would raise living standards is not an assumption, it is fact, and might I say, scientific fact.

The argument that Democrats have betrayed their principles isn't quite as spurious, however. Years of conservative media propaganda moved the country to the right (if it ever was centrist except in response to societial crises like the Great Depression). The Reagan/Thatcher conservative wave brought the world right. Fear of immigrants brought us farther right, despite their contributions to productivity. Money in politics has controlled the narrative for both parties, to the benefit of the GOP and corprotocracy. Media, which is majority center-right to solidly right, applauded GOP conservatism. The Internet has created information silos that feed readers only what they already believe.

Democrats feared more election losses and failed to connect with public opinion, which in my lifetime has virtually always favored Dem ideas more than GOP ideas. There is a reason that workers are stuck at 1975 wage levels--the GOP.

This was interesting philosophically but for me it fails the scientific test where philosophy faces political fact.