Honestly I see "steelmanning" as an emergent property of a completely broken discourse in the first place. The whole concept derives from the idea that we need specific terminology for when we're going to actually discuss things in a reasonable manner. It's basically a response to a group of public intellectuals who have emerged on the internet that spend more time building their brand and dunking on their opponents…
I lived with the same roommate for 3 years in university who was across the isle from me. We had many long conversations and I would say that ~70% of our differences in opinion boiled down to having different values.