Is CoinMarketCap a scam?

Could you elaborate on the concerns surrounding the legitimacy of CoinMarketCap? I've heard some people question whether it's a scam, but I'm not entirely sure why. Is there any evidence of fraudulent activities or misrepresentation of data? Are there alternative, more reliable sources for cryptocurrency market data? As a professional in the field of cryptocurrency and finance, I'd appreciate your insights into this matter. Clarifying these doubts would help me make informed decisions when it comes to investing in digital assets.