Yes, casinos are surrounded by different people who have their own preferences for deposits and withdrawals, so providing better options (including crypto and fiat) can be beneficial for them. Some prefer transactions using crypto, while others prefer fiat.
That's a double win for the casino because anyone that visits the casino will definitely gamble since he can pay with either fiat or crypto. I have a friend that isn't into crypto and asked me which casino do I use. I told him and he tried it out. This was how he started having interest in crypto when he saw that the casino is a crypto casino but he gambled with fiat.
Sometimes, when I have too much fiat on me, I gamble with it and save my bitcoin or usdt for future purpose. Having both payments method will bring more traffic to the casino.
What you're experiencing is similar to what I experienced when a friend asked me about gambling sites. Of course, I recommended a crypto casino, but the difference is, while your friend became interested in crypto after you introduced him to a casino, my friend never even tried playing at the casino I recommended, citing the complicated process.
For some uninitiated individuals, the process can seem complicated, especially if you have to first deposit fiat, then convert it to crypto, and then send the crypto back. Furthermore, they're unfamiliar with the transaction process. And what's funny is that when I showed him his deposit address, he was surprised to see the USDT address, thinking it was a bunch of random numbers and meaningless.
