> we encrypt all video, audio, screen sharing, and chat content at the sending client, and do not decrypt it at any point before it reaches the receiving clients.
This seems to say it, but I guess as luckylion points out, e2e doesn't mean not decrypted in the middle, it means no one besides the ends has the key. So you're right, the design they say isn't really e2e encrypted.
I'm not sure what escrow means in this context. But if the server has the keys, I would say no, it's not e2e.
This aligns with the definition on Wikipedia too
> it prevents potential eavesdroppers – including telecom providers, Internet providers, and even the provider of the communication service – from being able to access the cryptographic keys needed to decrypt the conversation.
This seems to say it, but I guess as luckylion points out, e2e doesn't mean not decrypted in the middle, it means no one besides the ends has the key. So you're right, the design they say isn't really e2e encrypted.