Sorry to sound like a brick, but that's exactly the reason why people that first read have allways an advantage. I mean who the hell is sending whatever currency to an exchange without checking first everything, including a small test transaction??
First thing on a new exchange is allways to check the rulews, withdraw fees and restrictions, easy as that.
No, You sound like everyone's general after the battle - yeah, sure,... with the Bytom there were plenty of exchanges to choose from for making simple ECRtoken -> mainnet swap...
Bytom launch was fuzzy as much as possible and still going in same manner.