Indeed, escrow should be used for all bounty campaigns, So the project team does not harm bounty hunters by delaying payments or
not even paying tokens to bounty hunters. The problem is not the bounty managers don't want to use escrow, sometimes the projects
team rejects it. So it's very rare that I find a bounty campaign that uses Escrow, even though escrow is very important to ensure bounty
hunters get paid.
using escrow doesn't mean that the project won't fail or not become a scam project. i ever joined the bounty that paid me with their token and using escrow. but from the day after the distribution until now, they don't hit any single market. it almost a year. they listed their token in DEX but doesn't have any liquidity. so escrow doesn't guarantee you with a good and legit bounties.