And most of those exchanges don't have a high volume. tokens that listed on that kind of exchanges are prone to being bankrupt.
we saw the many examples of such coins because of the nagging of their participants on telegram they force themselves to list their coins on some kind of bad exchanges.
even if there is a volume it is often fake. Yes, sometimes listing exchange becomes a long-term plan of the project, if the project is good then it is already listed in the roadmap, often bounty hunters do not understand that and as you said they always ask for tokens to register immediately. So, for everything to run smoothly, understanding and announcements need to be given at the outset, as a bounty hunter must also be wise and accept everything with all the risks.