Bridgoro isn't asking for any upfront money to do the bug testing, so there is no room to complain. Even you do not have to use your own funds in beta testing, so there should be no questions asked like this. Yes, there are people who do not read the details and start to complain when they themselves never want to try or test the project

I guess he complain about the reward distribution, you know it's really long if he need to wait till Q2 2026, it's around 7-10 months. Even there's no upfront deposit, but the effort and time for bug hunters spent should be calculated too.
But Bridgoro have clarified it, so he should have already understand.