The real issue is inconsistency. Different clients have different ways of trying to protect you from the same features, all of which are implemented differently.

Also, using an image proxy may protect you from leaking your IP, but as I have mentioned previously, this would now mean that URLs from your end-to-end encrypted messages would be decrypted and sent to the proxy, damaging your privacy in a different way.

Ultimately, my take on Nostr web clients is that if you're using any other browser than Tor Browser, you're doing it wrong.