Telegram? 5% of the world uses Telegram. And I bet the 50+ age demographic is heavily underrepresented in that subset. Significant sample bias shows up in US polling using mediums that are exponentially more widespread.
Nonetheless, I don't doubt the validity of these particular results, because I think we have enough corroborating evidence. We don't have to justify the rigorousness of a Telegram poll to come to that same conclusion.
Maybe Telegram is popular in Belarus, but there is one thing that is true all over the world: rates of technology literacy and access is lower for the old/poor/rural.
Nonetheless, I don't doubt the validity of these particular results, because I think we have enough corroborating evidence. We don't have to justify the rigorousness of a Telegram poll to come to that same conclusion.