This is not a negative effect listing pob on a bigger exchange site does not have anything to do with pob use case.
Pob already have a use case that is strong enough as a reason for people to buy pob. Even the listing of pob honey popular exchange site will boost the use of pob trading and many transaction and with that the value of pob would be so high.

The best thing that can help pob right now is if pob is listed on a popular exchange then,it will increase trust and encourage more staking to earn more