The second Teshuva is clear that he is lenient on a Mechalel Shabbos without any other factors to consider.
I still disagree.
it is clear that his intention is not to minimize the leniency of the Mechalel Shabbos
I agree, his intention was not to minimize that din; it was to be matir the bread, but it’s still clear that he doesn’t allow his sevara to be matir all pas of a mechalel Shabbos doesn’t stand on its own.