So this bacteria “de-evolved” into the highly useful trait of antibiotic resistance?
Please note my first post on this thread - I mentioned the idiotic premise that all change will be maladaptive - “all change will make an organism less fit as it changes it away from the way God created it”.
Obviously that premise doesn’t withstand even a cursory examination of the evidence.
Not sure that all creationists agree completely with that with that formulation (Note: I am more of an IDer than a creationist).
The problem is the ill-defined buzz-word "fit." The question has to be asked "fit for what?" For example, in sickle-cell anemia, the E-volutionist would definitely affirm humans are more "fit"(defined as survivability) when blessed with sickle-cell because it grants survivability in a malarial environment and therefore the prospect of progeny. Creationists might have a more nuanced understanding of "fit," if they bother to define it at all.
Would a world in which highly-adapted bacteria destroy all mammalian life be a more "fit" world? Some would say "yes." Others, "no." Others would say "define fitness."