That does make sense and a very good observation and point. I learned how to straight shave from Hondurans and it was funny how they looked at me when I asked about a strop.
I have seen several modern day straight razor shaving videos from China and they do not seem to use a strop either. I am only speculating though that they might use their hands instead, but imagine just how convienent it would be as a travel option.
I find, and you did not mention, that stropping with a dry hand produces more draw. I sometimes use a wetted palm after dry. Which did you use?