Nerfing Brigitte right after is not. The armor changes make sense- she is enabling Genji and Tracer by pumping them with armor before they dive.
But the shield changes?
…what? What’s the reason for the sledge? If we’re going to buff dive, why simultaneously nerf Brigitte’s ability to defend herself and her team? You’re already preventing her from providing armor, isn’t that enough?
In fact, the opposite road should be taken. It should look more like:
If you’re going to give her a two second cooldown to use the shield after breaking, you shouldn’t make it significantly harder to maintain, that’s not very reasonable.
TLDR: Genji buff good, Brigitte nerf bad