Bounties in 2018 are same as bounties in 2022. At least check bounty rules and tasks. Everything is made under several templates. Current bounties only adopted a bit under current market condition.
Main differences - in 2018 even scam project bounties distribute rewards and got listed. Now transactions and listing became expensive, and it makes people think that the amount of scam has increased. If you have participated in bounties in 2018, then go ahead and check projects, that have distributed you rewards. You would find that they most likely are already delisted, and have stopped developing or following roadmap long time ago.
For rule still the same between bounties on 2018 until 2022 but have different reward giving and several bounties campaign ended with scam after long running week, but always have risk for almost bounties campaign project but I just ask to bounty manager how keep trusted when manage bounty campaign, sending coin reward based on promising on bounty tread and never hold early for distribution before coin have lower price and bounty manager send reward to participants. have different between working system between 2018 bounty manager and their working right now.