On the one hand the Telegram team have a solid track record & a lot of users: They produced a high quality app that’s used by hundreds of millions of users. Also add to that the fact that more of the crypto chat related channels are on telegram.
On the other hand if you read through the white paper they put out, they give a timeline that promiss to do everything from wallets, to distributed file storage/computing/exchanges. That’s a very high bar to set without providing a lot of technical details. A leaked copy of the white paper can be read here:
https://drive.google.com/file/d/1ucUeKg_NiR8RxNAonb8Q55jZha0...
Personally I think it’s worth taking a small bet on them. The biggest problem in crypto right now is a lack of widely used consumer apps. Getting hundreds of millions of people to use an app is a harder than solving some of the distributed systems problems facing crypto right now in my book. I could see the telegram team pulling this off.