Yup, there's reason behind why gambler wanted to hide his activities, some because or religious or cultural belief while for some they are just ashamed being tag as most of the time people who look thinks that your participation already judged you as an addictive gambling practitioner. Though, it's always the person itself who can justify and answer the question.
In this case it makes sense that a gambler may hide their activities as it can be very difficult to deal with the scorn you may receive simply because you enjoy an activity other people do not like, but this is what makes online gambling and even more specifically gambling with cryptocurrencies such a nice thing, as now you can be incredibly discreet about your hobby, and unless you make a colossal blunder or you tell someone else no one will find out that you like to gamble.
That's correct, online gambling can be very anonymous especially when using crypto. This allows you to engage in gambling activities without leaving a trace and you can avoid unwanted interference from others or getting blamed.
Entertaining yourself while no one can blame you but what is more important is you should be controlling yourself and not fall into addiction that could ruin your life sooner or later.
If you have that capability to control yourself and you know yourself well in terms of placing good limit with your gambling activity, the chance that you can enjoy and be discreet is possible, it's more on how you want yourself being protected from different criticism and allow things to take place while no one knows what you are doing behind your room or within your capable device to connect to any online gambling site.
Just doing it discreetly and away to anything that may cause a bad impression on you, there are many people around that will keep judging you once they learn that you have any relative engagement with gambling.
It's your take though, whether to be open or keep it as secret as possible, as it's your money to use and to take care of.
Unfortunately there are many people out there that are only looking for what they can dig out of you to talk behind your back and spread all kind of rumors against you, and it is key to identify those people as early as possible and expose nothing to them, as those people love to incite all kind of conflicts and then argue that they were doing it for your own good, which is completely ridiculous as they are treating you as if you could not decide on your own what is best for you.