I made good amounts back in 2017-2020 from altcoin bounties but nothing much after that, today there is both lack of quantity and quality; you could argue there was quality campaigns even then but at least there was market for tokens with good price in most cases.
I've heard my senior friends discuss about bounties and they also attest the projects were highly profitable as they made more than they do with campaigns now but they also mentioned the time was within the range you mentioned and has passed. They said bounties are not as trustworthy and profitable in the past.
This is not a lie as there are third-party platforms out there that are attractive to new projects instead of this forum, for example Galxe and Zealy, if you aren't lazy you will surely make some money through these two, I have junior brothers that are using these platforms andand their feedback have been so good so far.
I really hope that something can be done so that new projects can come back on here for social campaigns and others, the stories of past bounties on this forum is so exciting, you will feel like going back in time and join.
Someone told me he was able to finish up his house because of the ICO race in 2017, he said he made a lot of money just from one single project, I don't think that such will ever happen again since there are too many options now.