From player's point of view, of course we want the casino as the one who cover the wthdrawal transaction fee.
Although the withdrawal fee is mostly just small amount only but sometime it can be something big especially in casinos where they use dynamic fee.
From casino's point of view, as they are running business so it is reasonable if they do not want to cover withdrawal fee and prefer to charge it from the remaining balance or from the withdrawal amount itself.
I myself do not mind to pay withdrawal fee as long as the amount is reasonable enough because there are some casinos with unreasonable withdrawal fee.