There is no need to refer it to his name, it could be the law of triangular squares or something (just an example, please do roast me for this)
Also, the theorem is is mentioned in the Baudhayana Sulba-sutra of India in almost the same structure, word for word, written between 800 and 400 BCE.
Today, it appears as if the Greeks are the fountainhead of all of western philosophy and world mathematics.
In education, the western civilisation is studied as an inverted pyramid. A large base of goodness and greatness with some badness towards the sharp peak thrown in.. like how the US is a country founded on principles of freedom while the bad parts like slavery is seen as a small aberration. Contrast it with the treatment of India in the western press, education and academia. The base of India is the bad bad casteism, poverty, snake charmers, millions of gods, some sort of pagan religion, etc which gets all the focus while small goodnesses hardly gets any mention. Nobody knows about Indian systems of philosophy which is richer than the Greek - from Advaita to Nagarjuna's Buddhist nihilism - ever heard of these? Blame your education. If you have heard, kudos, you are a statistical outlier.
All this leads to the ingrained slant that we see on social media. India means rapists, poverty and what not. The leftist academia dismisses all of India as unworthy of respect.
This is just an example. Thanks for reading. Disagree if you must, but let's enjoy the freedom of expression.
[All hail the Internet. To the Human Brain and Evolution behind it, belongs all Glory.]