Well if you ask anyone who says bitcoin is a scam, how bitcoin works, they have absolutely no response because they have absolutely no clue how it actually works. I remember when people use to say this to me all the time back in the 2015/16/17 days. My first question to them would always be "Okay, do you know what the blockchain is, or can you explain how it works"..never once was any single one of these persons able to do so. So, there's really just a lot of noise out there.
Hmm To be honest this is the reason for their mistake that they didn't even study the best things like Bitcoin, Blockchain, etc., and they say that it is a scam, high volital, blah blah. I say that if they dig even a little bit deeper into the topic of what Bitcoin is, I can confidently say that they will become a fan of Bitcoin more than us. Because it's clear as day light that Bitcoin/Blockchain technology is a highly capable technology that no one has ever seen in the history of finance the same immutable, decentralized ecosystem as Bitcoin. So if these ignorant people even read out little bit about the Bitcion that what it is, how we can benefit from it, etc., then I hope that those people will also consider Bitcion as prominent instead of considering it a scam.