I don't think Bitfinex is a scam, it's been a trusted exchange in the crypto market and using bots is a normal tool in making a trade, it is the prerogative of the investors to fully understand on how to utilize the tool.
I also think so, bitfinex is a trusted exchange, and even if there is news saying that bitfinex is a scam, maybe it is untrue news, and someone who says that bitfinex is a scam, they must have really strong evidence.