Are you talking about Crusades? Because in modern times there is not one event when Christians banded together and decided to kill some Jews. Are Christians and Jews blowing themselves up in supermarkets in Israel?
Whether he is a “troll” or not, I don’t know however the way he talks of Islam is just like most Muslim speak, you can’t fake that.
Taqiyya is NOT a “feature of only some sects of Islam”. Falsehoods are told all the time to promote the cause of Islam and are sanctioned in Quran, including lying under oath in testimony, deception by making distorted statements to the media(such as Islam is a “religion of peace” and terrorists are “extremists and do not represent Islam”).Deception and Islam go hand in hand-all you have to do is watch Arabic tv and see what they preach.
I don’t know what you know about Islam and how many Muslims you have actually encountered but I read Quran and hadiths and met and spoken with plenty of Muslims
I will also say this-all the Muslims I spoke with, will deny the existence of verses reg killing of infidels, wife beating, etc. Here is a how a conversation always goes(in my personal experience)
1. When asked why certain passages advocate X(violence, beating of women, murder of Christians/Jews), they will deny that said passages exist
2. When shown passages in Quran that show that these do exist, typical tactic is to say”well, its only done in such and such circumstances and only certain way, you are misinterpreting it”
3. When that doesn’t work, Islamist will try to use misdirection by throwing the blame in your court(Look what Crusaders, Christians, Jews, America , did/doing)
4. If they fail to derail you still, next will be “only people in certain Arabic countries/tribes do all these things and they are ignorant and that’s not true Islam”
5. If all else fails, he will scream and call you names in order to silence you. Since in Arabic mind, if you don’t scream abuse louder than him and just walk away in disgust that means he won