YEL is a Decentralized Autonomous Organization (DAO) and the YEL token is its governance token, therefore, all decisions and proposals will be agreed by the majority of holders. Buying and holding YEL grants users voting power. The more YEL held, the more voting power users have on proposals.
YEL holders have an incentive to hold YEL tokens as well as farm additional tokens, so they would have more influence over proposals and can protect their farming interests.