Not claiming incurs an additional day of transaction cost because the points are only retained for 15 days, and there is no guarantee that they will be more valuable the next day; the price might actually be lower. If you don't claim again, you'll incur another day's transaction cost by the next time you claim. The platform is designed to retain the points from the first 15 days for the clever, in short, you can only benefit from the airdrop within the total point range of 15 days. One more day means one more day's cost 😀