a few hours ago i even saw someone in bjfun chat that he can't withdraw even 30$ on tron because it says the amount too small
This topic by Pmalek is specified to give information about bitcoin withdrawal so the information you read in the table is obviously for bitcoin withdrawal only. In case the casino has many alternative coins, it is different thing and the casino may have different minimum withdrawal for each coin. You may inform Pmalek if there is a minimum withdrawal in BTC at blackjack fun so Pmalek will revise the table but you cant compare other coins minimum withdrawal or its fee.