I disagree. Swap is not a universal good. It used to be important for making VM code more even when not swapping in certain circumstances, but VM algorithms have changed.
That was based on very old kernel code heuristics that no longer apply.
Also, when considering measuring: I don’t even know what you would want to do for measuring swap and memory when zswap is in use. This is probably a case of “first do no harm” though.