Not all of them actually, in fact some casinos are giving us an option to use altcoins to avoid the high transaction fee, and I think at this moment, the transaction fee is not high anymore, so if casinos had increase it before, they better get it back to normal now.
Now! It is not about "normality" so that the fees return to a minimum ratio of 1:10 if that is what is understood by normality, nor is it that the casinos want to profit from this (as someone comments), really more myth than truth at least in serious casinos with an excellent reputation.
Here it is not about "fees" cheap or that it is a high or low fee, it is about the correct fee, as I mentioned in some posts, it is about having the correct estimate or the closest thing to that and not simply charging a fee as high as possible so that the transaction runs in at least a few minutes.
The options of three types of fees high, medium, low or to be able to set the fee yourself are presented as the best.
With that, I think we should just choose the best site that offers the right withdrawal fee for us, which is closest to the actual fee, however, there are really sites that their standard withdrawal fee is very high compared to the actual fee when transacting using your own wallet.
We can't say they are a bad site though as gamblers are more looking for the experience than the withdrawal fee, although let's say withdrawal fee can be part of the experience but for big bettors, it doesn't really matter a lot.