The first goal is to nerf defensive and camping playstyles for all races
Sure, the Shield Battery is being nerfed.
However…
Terran can now salvage turrets and sensor towers, and sensor towers are also cheaper. Liberator fields being much larger and able to reposition more quickly… These are massive defensive buffs.
And for Zerg…
Spines build more quickly, and both Spines and Spores deal significantly more damage… These are also massive defensive buffs.
It seems to me that your first stated goal is just gaslighting
The second goal is to continue reshaping Protoss tools for high-level gameplay.
Frankly, this patch seems to follow suit in a long line of patches where Protoss is getting kicked in the face. This time, they exchange massive nerf to batteries, immortals, disruptors in exchange for incredibly minor buffs to colossus, tempest, and mothership - overall, Protoss is becoming weaker. Meanwhile, the other two factions are looking stronger from their own changes.
The third goal would be to provide strong playstyle alternatives for various matchups
Well, I’ll still enjoy watching TvZ.