In my opinion, football is primarily a sport, and cryptocurrency is more of a business. But sports make a lot of money, especially football, so here sports are intertwined with business. And in business, various marketing tools are used to achieve the goal. As a tool, cryptocurrency in football is used to monetize this or that club, and fan tokens that have appeared and will appear help this. We live in a world where everything is intertwined - business, sports, advertising, famous people, politics, etc. Cryptocurrency is so popular that it doesn't exist in isolation from all of that either, so it's okay to have a mix of one and the other.