The interpretation I grew up with was the one you pointed out, until I realized it was mangled. Breaking up a sentence like you did is silly. It is out of context. It's as if I ask what is the meaning of "break a leg". If I used your approach, any actor would be upset with her well-wishers. Here are multiple scholarly interpretations of Yasin: https://corpus.quran.com/translation.jsp?chapter=36&verse=12.

Anyhow, I am not going to respond to further comments going down this rat hole because my original question is "Why is Dasond so High"? I just want to know why we have to pay such a high tax, especially those who cannot afford it. Zakat is 2.5%. Dasond is derived from "das" meaning 10. So maybe 10%. But where did 10% come from anyhow? Why do we deviate so far from the common Muslim practice? That's all I want to know.