Ironically Monero historically was the most vulnerable coin in regards to fractional reserving it. But as it is also a powerful MoE that is actually used in all markets it got delisted from almost all CEX and I sincerely hope that they will pull it from all remaining CEX. That will kill paperization. But even with remaining CEX it can not be dumped below a certain threshold value because its usage dictates a price floor tied to the real economy which makes it ironically a good store of value despite not being able to perfectly audit it.