Remember that Poser is a program that costs only less than $300.
I mean: I've read somewhere, maybe last year maybe sooner, that to have a real skin look, we should have not one layer of skin but many, with different SSS, depending on the part of the body. Poser is not thought to achieve a perfect realism and honestly I don't get the silicon touch you're speaking of.
the article I read at the time was speaking of burned-in SSS to avoid for each user to have the equivalent of an RTX9090 (<-- sarcasm)