Clearly just FUD, may also be someone trying to depress BTC prices.
During the fall a lot may have sold uncomfortably close to the current price hoping to buy back lower. The trend might be broken now so they are scared.
I agree. If your blockchain.info wallet was really hacked, your would know it because all your bitcoin would be gone/missing.
As mentioned above, anyone can create any "label" to their bitcoin address on blockchain.info as long as they control the private key (and know how to sign a message). Any message that you "receive" via blockchain.info is more or less worthless