To be fair, any popular platform will be full of scammers sooner or later, especially if they allow registration easily. I remember WhatsApp being quite famous in my country as a medium to spread malware, just because most of us use it compared to Telegram. Because of this there is a narrative that Telegram is more secure compared to WhatsApp. At the end of the day, trusting any app to filter out any malicious actors is a bit naive, and probably a bad security practice since you can easily block people or filter out what can be pre-downloaded. Concern about malicious bots are valid though, which is why I said people should probably not use a random bot unless the casino have a website and some history beforehand.