That explains why Peridot didn't summon her weapon when her and Steven were cornered by the mini clusters, she didn't know how because she was never taught! That bothered me so much while watching that episode.
My theory: White Diamond /Pink Diamond rivalry. White shattered Pink and Yellow had her suspicions. Yellow was either very close to White or looked up to her like an Idol. Which is why she reacted in that way
I actually really like this it ties together reactions, why the temple fusion hasn't been talked about, and still holds true that rise in someway did shatter pink diamond. I still like the idea lion is pink diamond though