Of course I realized this. But I thought if there is any explanation to that “yellow” last item. If the fact that it is there would imply some “vulnerability” in the sandboxing? And if the proposed solution in that thread is legit and viable?
I might not need it, but I need to ask 
–edit–
Forgot to mention in OP that I found the following document on yama but since it is above my understanding of such things at the moment, I felt the need to ask the question:
https://www.kernel.org/doc/html/latest/admin-guide/LSM/Yama.html