Do people really say, “I don’t do tzedakah or chessed because it’s optional? I only eat in the sukkah the bare minimum because it’s optional?”
You are taking an extreme. I’ll take the other: do people give every moment of their time for chessed and every penny they own to tzedakah (don’t worry – I’ll find you a heter for “al yivazvez yoser michomesh”)?
Do people eat one seudah after the other in the sukkah? Endlessly eat matzah?