Still available but its hard to find out those real bounty projects from thousands of shit. Even in those days of 2018, there were also shit bounties! so its important to analysis a bounty project before start promoting blindly. If you find out bots, bot accounts, multiple fake people, then avoid those bouny project. But another real fact is, good project Doesn't neee bounties for their promotion. Lots of good project succesfully traded without helding any bounty..
these project usually reallocate their bounty campaign budget to another marketing activity which is based on their mind more attractive to investors. maybe recruting crypto influencer will be their option since alot beginer hear their advice. if any project provide bounty campaing , they will give small allocation to prevent dump and protect their investors.