Yeah I can't believe it either, someone on the official forums speculated it could be just a case of extremely poor internal communication, meaning devs probably did plan something about it but that info didn't reach community managers, I hope that's the case, we'll find out soon enough.

I'm very salty myself lol, not only I have all 7 runes but I also made the sigils, with the specific purpose of not having to grind gear upgrades ever again and not cluttering my inventory/bank with them.