If you're confused by this after hearing that the weights are based on market capitalization, Amun states why in their ETF overview.
>"The index covers the largest and most liquid tokens, weighted by their forecasted 2050 market capitalisation."
That's right, their analysts forecast that ETH will continue to dwindle while XRP rises dominantly over the next 30 years, and also appropriately forecast that btrash and litecoin will be small pittances compared to the others. If you're not buying XRP now, you're not gonna make it.