I have a family of six. Three Deltas, two Alphas, and a Beta. The Si-valuers may discuss whether a noodle tastes springy or whether something smells purple and the beta just thinks it dumb.

s consider what the environment is whereas

s consider their personal experience concerning the environment.
Ryene stated that black rice was weird. "Weird" is a word like "short" or "flat;" its meaning varies depending on who uses it and what they are comparing it to. Then Ryene compared the texture of the rice to other textures she was familiar with. That sure seems Si-valuing to me.