> I'm surprised to be reading justifications that amount to "it's been deployed for several years now, so we think it's OK",

I'm not making any claims or justifications about it being good or not. Just a simple statement that Linus put it there, and there it is, and it's been that way for a while. I even referred to it as "voodoo". As I mentioned in the post, 5.18 didn't change anything about entropy sources and gathering. Certainly trying to see more rigorously whether or not the Linus Jitter Dance is defensible would make for a worthwhile research project.