After the FTX fraud spreads to every corner in my country my friends are saying crypto is the biggest scam of all, they said one day everything will reveal, this is coming from those that shows no interest in crypto at all even when I tried to confuse them but I did something right.
Indeed, at this time crypto is still very foreign to the ears of many people, in every country it may have the same thing in common. With the lack of knowledge about crypto in the community, when there is negative news that comes to their ears, surely that news will become a strong grip for them, about their point of view on crypto. Just like your friends, they seem to already know and have heard of crypto, but they didn't research the crypto in depth, and finally when the news of the FTX scam came out, they immediately convicted that all crypto is a path for fraud.
So in essence, don't listen too much to the words of people like your friend, let them say anything about crypto, because that is freedom of opinion and rights. It's also okay to give them input, because giving enlightenment is not a bad thing, but if I was in your position, I usually ignore opinions like that, because in my personal opinion, not everyone has to like crypto, if they like crypto, then they are in line with us, but if they don't like crypto, that's okay, it doesn't hurt me either.