So all the FAQs on their official site are open about technically being able to read private messages if you don't enable secret chats, and it's somehow lying?

So all the FAQs on their official site are open about technically being able to read private messages if you don't enable secret chats, and it's somehow lying? The main page says Telegram is "secure" without elaborating, though. I can see people can be misled, but they're not lied to.