thank you for your perspectives, very good insights.

Thing is I cannot be sure that the exchange themselves did not update the terms and conditions

So, where do they draw the line?
As said gambling is allowed in my country.

I cannot use USDT or none of the leverage products (due to Mica regulation in europe), but the exchange still allow USDT to non-europeans.
People like to use whatever they want with crypto, investing in meme coins such as TRUMP coin, for me that is worst than gambling.
Reason why I prefer these instead of fiat sportsbooks is all about settlement, I can immediate withdraw and receive funds in my account/wallet, isn't that reason enough?
I hate banks but we cannot leave without them, even worse ECB will get us all "digital euro" in October which surely have restrictions in place (such as not allowed to use funds for gambling)