They bring a new product type to cryptocurrency market but change it completely is impossible. It is only one new option among other available options so that people can choose from.
Not all Bitcoiners use Telegram and if they don't use Telegram, it's hard to convince them to use Telegram trading app. Not all Telegram users will be ready to use that Telegram trading app.
I don't exaggerate the importance and success of Telegram trading app, please be realistic.
I also don't wanna exaggerate their success but it's also good to see a young project achieve such success in a short period of time.