The reality of the airdrop involving Yfismat and its claim of being a fork of YFI depends entirely on the legitimacy of the airdrop. It is important to do your own research and due diligence before participating in any airdrop. Make sure to check the website, whitepaper, and any other information available to ensure that the airdrop is legitimate and not a scam. Additionally, it is important to be aware of the risks associated with participating in any airdrop, such as the possibility of losing funds, being hacked, or having personal information stolen. Ultimately, the responsibility of determining the reality of the airdrop lies with the individual participating in it.