I noticed that many campaign started paying bounties with ETH , i also noticed that most bountyhunters are very happy for this. In my opininon, this projects will be good in future only for investors.
For me, I don't want to miss the opportunity to long-term storage of their tokens.
I checked the bounties section and I saw that there are still a lot of campaigns that are paying with their own tokens. I'm not sure if you really are looking at it. It's a rare bounty to see that they are into ETH - paying.
And regarding the bitcoin paying, there has been a big reduction for those campaigns until now. As you can see unlike few years ago, almost everyday there's a new btc paying campaign but now its also going through and if there's a new campaign it only accepts few participants.