I think peoples expectations of 'reward' are built up in whatsapp and telegram groups which encourage sign ups and from YT videos that extol the earning potential. When riches dont instantly arrive, theres no interest.
I do think this is sadly an issue from poorer parts of the world where rewards are all that matters to them although if people actually took a little time and made a genuine effort to be authentic and original as well as engage, the rewards would be forthcoming a lot quicker. How dumb are so many people who turn up and post a spun '5 benefits of Mango' post and then wonder why they get no engagement or reward.