Economists aren’t really in denial, they are just doing their job of giving a false sense of scientific legitimacy to the plan the ruling class will enact anyways: discipline labor, cut social spending, bail out finance when they inevitably crash.

Aye, there’s a reason economics is called “the dismal science.”

Because it is not a science.

A founding principle of economics is that people make rational economic decisions...

Pure Economic is a science, but popular implemented Economic is a pseudoscience at best. It has been corrupted by commercial interests.

Different types of science are derivative of other forms of science. Physics is just applied Mathematics, Chemistry is applied Physics, Biology is just just applied Chemistry, Psychology is just applied Biology and Mathematics is applied Psychology.

Pure Economics is an amalgam of Psychology and Mathematics.

Economic Rationalism is a oxymoron because Economic relies on irrational psychology and is subject to change based on observations.

Pure Economic is a science

A statement is not a fact. Prove your statement.

Pure Economics is an amalgam of Psychology and Mathematics.

This implies Psychology thinks Psychology are rational, it does no such thing.

Economic Rationalism is a oxymoron because Economic relies on irrational psychology

You are almost there:

Economic is a science is a oxymoron because Economics relies on irrational psychology

Economics is a science is a oxymoron because Economics relies on irrational people being rational.

That last statement is one view of one theory (that happens to be the predominant one), it’s not like this a fundamental tenet of economics.

But you might like behavioural economics and doughnut economics as alternative views that don’t hold the individual as rational actors.