According to Plutarch, the first person to blame is Julius Caesar. On his pursuit of Pompey into Egypt in 48 BCE, Caesar was cut off by a large fleet of Egyptian boats in the harbor of Alexandria. He ordered the boats to be burned. The fleet was destroyed, but the flames spread to the city and the library. It’s not known how much of the library was destroyed.
When Caesar documented this attack in his account of the civil war, he left out the destruction of the library; however, this is not uncommon of Caesar, who often left out damaging facts about himself in his writing. However, despite this loss, the library lived on. According to reports, Mark Antony gave Cleopatra 200,000 scrolls for the library well after Caesar’s attack.
I was... a difficult student.
They did not like that not only had I read the source material, I read it better than they did.
One yelled “WELL THAT WASN’T WHAT THE ORIGAL DOCUMENTS SAID!” Then was unable to name any documents that agreed with him (I never learned Greek, but had a few Latin dictionaries to work with).
Now? I would have ended up in jail for hate crimes.