npub1p2…k3m82 on Nostr: The goal of the Telegram chat was to make an easily accessible location to ask ...

The goal of the Telegram chat was to make an easily accessible location to ask questions and seek help in a public forum. So from a community forum perspective, its easier and more accessible (wider audience available and existing user base) as well as an ability to sufficiently moderate community group chats.

The reality is also that casual (nontechnical) users who need the most help are disinclined to download a dedicated app to ask for help even if its a more private option. These casual users would more likely already have Telegram.

But regardless of privacy aspects, the fact the group chat owner account is currently irrecoverable is a different issue with services like Telegram.