Given the alternative proposed by OP was more of the same but with layers on top, saying "how about just using xargs and sh anyway" is a simplification -- learn 2 tiny things vs start depending on some new tool whose only purpose is to let you avoid learning those 2 tiny things by adding template language, etc., on top? I'll learn the 2.

As for widening the scope to other tools, I've written about that on here before, how I have lots of powershell experience, some nushell, etc. I haven't become a convert (definitely not on Linux, of course occasionally on Windows).

Happy to respond to any input or anything, but you should reply directly to people if you're going to criticize them -- very poor form to blanket criticize while also taking an uncharitable read.