Op from your description to earn passively, I didn't get anything there and the only thing I understand here the topic. The $ZKF is it a coin or airdrop? Op let me tell you there are earning that one will make in internet that is not even worth it. All the projects or portfolios you made mentioned in the op are not popular to many in the cryptocurrency market so therefore I don't think people will be interested to start or follow that earning methods.
People like to invest or earn in a project that is popular to avoid scamming but if your mentions are well known then there is no problem. But even at that not everybody will be interested to join.
Of course buddy, that's true. But the thing is, no asset skips this phase of being quite unknown before moving upwards, $ZKF is actually an airdrop you get for performing the above listed tasks. It'll gladden your heart to know that we're in a highly speculative market, doing some of these retroactive airdrops could end up being beneficial. I'm just sharing the info I've so everyone would benefit. I've shared the link upwards already, you can look it up to check more about the event/Airdrop.