I think you’re all over reacting. (Shocking)
Unless you play main tank (most notably, Rein) this change does absolutely nothing to nerf Brig. She’ll still be able to 1v1 every DPS hero in the game and probably win if put in her strongest area (short range), and effectively delete all non-shield tanks.
Her healing and armor packs didn’t get nerfed. Her bash range didn’t get nerfed again. The only change is not going through shields. So, unless you play main tank you’re still going to hate Brig just as much as you do now.