[dheera]

> no third party clients

Isn't their client open source? If I compiled it myself, is that a third party client?

If they don't let me compile it myself, how can I trust their official version is using the source they published?

[alias_neo]

You can build their client and use it yourself, but they don't want you to distribute it and they don't want you using their infra and API from a third party client.

[maccam94]

They don't want people distributing unofficial builds that claim to be Signal due to the risk of supply chain attacks against users.