Only the early cast stainless steel 1911's as made by now defunct companies like Crown City, Vega, AMT, and others had galling problems.
By the time mainstream companies like Colt began making stainless 1911 pistols, the reasons for the galling and the "fix" were well-understood.
They discovered that making the slide and frame from different alloys of stainless, and giving the parts slightly different heat treating eliminated the galling problem.
Today, stainless guns are no more prone to galling than ordinary carbon steel, and it's not an issue.