Why is this false information making everyone so excited?

Because this will open up Bitcoin and even cryptocurrencies as a whole to more mainstream adoption, institutional investment, better liquidity, etc.

There is no doubt that the fabricator of the false information must have known about it, guessed how the market would react, and may have made some kind of bet before it happened. Based on this, this case may be labeled as "market manipulation"

Whether this is a team hoping to profit from the market’s knee-jerk reaction, a deliberate move by traders on Telegram, or a mistake by a Cointelegraph intern is still unclear, and Cointelegraph is still investigating.