Telegram is just actually superior in terms of features I don’t get it.
Most people don’t care about privacy anyways so in this case I’d argue features are more important for the average user, which telegram has.
Well if that’s your angle, then the main reason for choosing WhatsApp over telegram is the first-mover advantage. WhatsApp came out years before telegram and is a very popular app in many markets.
I’d argue that not many people care about sending 2gb files either. In my experience, more people care about privacy when prompted than about sending 2gb files.