Corono Virus has a huge effect specially on physical gambling casinos because here in my country they are implementing social distances.
However COVID19 only have minimum effect in online gambling specially because they are using cryptocurrency.
There are still casino gamblers that are not aware of the existence of Cryptocurrency based online casinos because they are concentrated on gambling physically that they are not aware of its existence, and the data could be higher but this time is the best opportunity to invite them to play online using Cryptocurrency.
Ambiance is a big thing for many of the gamblers. And in addition, they would like to show off. All these things won't be there, if they sit at home and gamble using cryptocurrency. I would disagree with you on one thing. I am pretty sure that most of the gamblers have a good idea about Bitcoin. Because it was extensively covered by the mainstream media in 2017. The question is only about the preference.