I don't see where OP specifically slutshamed the ex? And I skimmed the comments and haven't seen anyone else slutshame the (ex-)bf either?

I think OP's reasoning of "being just another number" is silly and a bit immature (he was her first, so that's not too much of a surprise. She's definitely not as sexually liberated as she thinks she is), but there's no denying he lied to her. Had I seen the first post I would've advised her to talk it through and try to get over the number thing. But if she wasn't able to that's her prerogative.

There has been no mention by OP of being a slut or being dirty if you have a high number. That's the difference between her posts and the posts that usually come by in this sub.