I don't think so, there are more safe investments in crypto, trading as an example. This requires more time and learning, of course. But it's up to you to decide where to put your money.
There are always risks in investing, but it is still much better to invest in casinos than to trade, lend etc. And it would be up to you to research and learn which gambling site to put your money into.
Yes investing is a good option in bitcoin casinos because i dont thik chances of loss there is higher.Trading and gambling can be really risky.
But i think lending is also a good option if u lend only to those who can provie valid collateral.