Yes, a Signal proxy, such as https://signal.tube/#fiberchannel.org would be very helpful.
I don't want to go through the whole "DM me for the link" route because the people who need this info are probably not in a position to start creating accounts for random social media sites. If it gets scraped, I'm happy. If it gets DDoSd to the ground by nation state actors, I'm proud. If it gets blocked, I can change the IP address and the domain at the click of a button.
Let's see what kind of proxy / censorship circumvention measures Meta is willing to develop for WhatsApp. My guess: precisely fuck all.