why were Philosophers back then not scientists?Watch
So it wasn't necessarily purely less advanced scientific equipment and religious superstition that was the reason.
The problem is that increased scientific method seems to have eaten in to many people's ability to be artistic too.
Many people don't TRULY hope or dream or even feel comfortable any more. They more or less think that life is an out of control train, its destinations predetermined and its journey not necessarily able or even designed to be comfortable.
Da Vinci is widely known as an artist and inventor but he was a man of science too. Not conventionally like doing experiments but observational.
However, modern philosophers don't do it either. It would be a limitation for them
Back then in ancient Greece, philosopheres were somewhat equal to what we would call scientist. The method was not yet invented, they were working on it, and they were doing research in everything. Including maths or engineering. The first computers, robots and programming was done by Greek philosophers.