What would steelmanning Young Earth Creationism even look like? Young Earth Creationism is already the playdoughman* version of Creationism. If you steelman it, it wouldn't be Young Earth anymore.

I don't dispute this, except that this is also how I feel about some of the views some other people in the rationalist community think deserve to be steelmanned.

Indeed, is there ever a case where it isn't at least plausible that the steelman version of view X wouldn't be view X anymore?