I know it’s not allowed, but a male member once told me my rank.

Maezawa here. It’s not that it has no meaning. If a man receives a “You’re wonderful” and then really wants to make an offer, he may have the possibility of moving up to a higher class. The club might also temporarily lower the woman’s class. Alternatively, her class may have changed after hearing from the man. In those cases, there’s a chance it could lead to an offer, so I wouldn’t say it’s meaningless. That said, the chances of any of the above changes happening are fairly low. So the real question is whether it’s still worth sending a “You’re wonderful” even when the odds are low.