Can someone confirm what "Anonymity set, 572user deposits" means?
Does this mean that currently, 572 users (addresses) have a deposit there? As far as I can see, the last deposit was 4 days ago, does that mean that nobody has used this mixer since then?
We can only assume so. This is a centralized service so all numbers it shows are numbers which owners of this service want to be shown. They can still get deposits and switch off the counter. So we can only assume that this number shows an actual amount of deposits in the system as it was explained by service representative. If it true or if there are less or more active deposits, we can't be sure.
Some people said here they tried to withdraw their funds. And we don't know if their deposits still counted or not even if a system still works and does it correctly as it was described.
So we can suppose that there are about "Anonymity set" number of active deposits, but we can't be sure.