No, I think PoR alone is not enough to gain user trust, did you know that some time ago there was information that stated that various exchanges formed a coalition to lend and borrow funds for PoR purposes? Because of that, PoR alone is not enough, exchanges need to also make their PoL (Proof-of-Liability) reports, with the combination of PoR and PoL, I think it will be enough to gain users' trust.