It is easy to detect the fake entries but the campaign managers are lazy, or they don't want to do it. Because bounty managers are not moderated, only tag from DT members is not enough, so when theymos still doesn't want to control this, it still happens.
I don't think so because not all bounty managers are lazy to check every entry. I can also understand if they cannot carry out their duties at any time because you can imagine it yourself if there are many participants participating in the project even reaching up to 2000 people who participate and and this is only just at social media campaigns, not yet another campaign that still has to be calculated. So I think we must not judge, like saying that the bounty manager is all lazy, because that is not true.
The best step is if you find suspicious activity from someone, immediately report it to the bounty manager. Don't be afraid that you will be ignored. It's better if you try to report it instead of allowing cheating people to get the token reward. I believe that there are still many bounty managers who are professional and responsive to things like this.
That's why I don't join on those campaign with a low rank campaign manager or even a copper member with a low rank. I usually join on campaign with at least senior rank btt account. And Yes, sometimes the bounty manager or the campaign manager is also a victim for such a long period of time. This crypto community is composed of different kind of mind ( people ) but always keep on your mind that more of us want money and money and money than a project.