Yeah, surely we already know that there have been ICOs that pay hunters with ethereum and xrp coins. But that happens if ico project developers care deeply about the quality that determines the future fate of their coins in the future, because they are serious about creating their coins. The coin will have the direction to suit the purpose of the whitepaper of the project.
But unfortunately, there are few projects that make it to the top for various reasons. So eventually the project became undirected and died in the end.
I very rarely see bounties that pay with Ethereum, XRP, USDT or DAI,
because most projects hold bounties without spending their own capital, so the prize is the token / coin they make, but the problem is when the price falls and the one to blame is the bounty hunter who should the CEO or the project team anticipate this.
Of course, not many projects will make it to the top, because they start their projects without strong capital, sooner or later a project like this will be left behind and eventually die.