Yes because no bounties in their hands at this moment. I missed a few communities Kryptial,qqwx,adsistmedia(isee something activities may be 1 project still running) from heart. Bountyhive was long term inactivity but recently they already launched a few new bounties. Bountycloud also conducting new projects currently. They have no projects that's why literally almost are looking dead conditions.
Some bounty groups are no longer popular like this. Their groups seem to die because there is no activity at all, so many people leave the group.
But if you look at the bounty board then you will find a good manager so that you can still choose the project that you like to promote for a long time so that the bounty will continue to follow the trend.