I don't know if it's a bot or not, so far no one thinks that far but coinmarketcap is not a decentralized site, or maybe the coin dev easily change the information in their coin details to manipulate their community maybe. Even though Coinmarketcap was transferred to Binance, I think Coinmarketcap is still good enough to use even though some data is not valid, such as coins under 100, or what you mentioned.