It's a bit like money. Money itself isn't bad, but people do incredibly bad things to get money. Likewise, crypto isn't "a scam". People make a lot of scams related to cryptocurrency, but that doesn't mean many of the concepts of cryptocurrency are bad or a scam.
Bitcoin may be quite imperfect, but it's also quite useful for exchanging value quickly and cheaply, and without banks getting to decide if you can or cannot.