I have a BA in philosophy. Rather than learning the truth, I discovered that almost all philosophers were wrong about almost everything. But in tracing the history of wrongness, wrestling with all the fashions of thinking, you learn to think with precision. That skill continues to help me.
Same guy in the same book described light as being made up of tiny indivisible parts moving very quickly - a reminder that proving the particle behavior of light was what Einstein won his Nobel for.
Or how about when they thought about the implications of indivisible parts of matter obeying physical laws as invalidating free will and thus concluded there must be a variable component to the behavior of such quantized parts of matter (which they termed The Swerve) - literally thousands of years before the experimental evidence for a probabilistic behavior to quanta and the relationship to the topic of superdeterminism.
I suspect part of the problem is that by continuing to prioritize the teaching of the philosophers that directly influenced later philosophers we extend the survivorship bias caused by the church in locking up Leucretius's naturalism 'heresy' and promoting Plato and Aristotle's intelligent design.
So most people at best learn that the Epicureans were talking about atoms and didn't believe in an afterlife and had some loose sense of hedonism, but never bother reading the off brand philosophy for themselves to realize "holy crap, these guys were objectively the most correct in antiquity on a number of major topics in astonishing detail and were broadly ignored in an age where impiety may no longer have been a death sentence like for Socrates but was certainly not winning popularity contests."