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.
There is no one-size-fits-all solution. If the project is not fraudulent and has prospects, it is much better to get rewards in its tokens, so it turns out to be much more profitable. If the project is fraudulent, it is better to get paid in a stable currency, so you can earn at least something. However, the problem is that it is very difficult to determine which project is in front of you until the investment stage is completed.