Why Are rewards paid in ETH and not the native token to the project?
Don't you think this is a good thing? I certainly do.. ETH is a very valuable currency and more stable and liquid than any new token that is still becoming established. Ethereum is going to have a long an happy life and will likely outlive most other currencies.
This means the derivative will always be valuable, regardless of the current value of the REAL tokens themselves.
"rewards" - you mean dividends? Hm.. They ll paid in ETH? I know, that centra also will pay dividends in ETH. Dont know what is the reason for this...