I suppose one possible out that's both realistic and consistent with Clark's projected image is to suppose that Clark tended to run away from any fights that he couldn't avoid otherwise. That would be in keeping with his cowardly image.
Even Action Comics #1 had Kent backing down from an outright challenge to a fight.
https://www.supermanthroughtheages.com/tales2/action1/?page=7What's notable to me is that Lois slaps the thug who wants to dance with her, and the thug then challenges Clark(!) even after he was pretty much meek and accomodating. Even with 1930s sensibilities, I'd think the thug would react toward Lois who slapped him. How meek do you think Clark would be if the thug slapped or slugged her right back (which would seem to be more what I'd expect out of a 1930s thug sort)?