Does not matter what the guy says, who makes millions off the product. I trust the independent security experts who have repeatedly shown, that Telegram is basically a differently coloured WhatsApp, when it comes to security. Like, end to end encryption was even optional for such a long time. 😂
& in regards to who or what company is behind it, #Telegram is not exactly trustworthy, either.
That said, there are plenty of people & organisations, which have been infiltrated, because they thought they were safe on #Telegram.