The term species, how it is defined, and what it defines is a tough one. Even those within science don't all agree. For example we know that 'speciation' (We'll go with the popular definition) can occur within fruit fly populations. But, whether speciation has occured or not they are all still fruit flies. Speciation is a flat line.Finally, one of the populations evolved, and gained this ability.
So, the defining of macroevolution as change above the species level is begging the question. Just because the fallacy is committed by many doesn't make it any less of one. Speciation defined this way can occur with only loss of genetic info. No one here will argue against a loss of information. Losing information will not get us from A to B. It can get us from A1 to A2.
So E coli becomes.....drum roll.......E coli. Wow!! Stop the presses.
Regarding foxes. Domesitc dogs, wolves, coyotes, dingos, etc. have 78 chromosomes. Foxes have as low as 48 and no more than 66. Evolution of De-volution?
These examples are all sacred cows for Darwinist, but can not and will not ever support molecules to man evolution. It is devolving, not evolving. Yet those who are religious about their evolution wave the banner for speciation. Now if you want to argue that you devolved from some other species, then you won't get any arguments from me. My daughter is missing both her canine teeth. Something that as actually becoming quite common in the dental world. She lost the genetic info. A change for sure. But not Darwinism.
All that said, it still doesn't deal with the issue of genetic code. Code is a language, and is immaterial . At the end of the day, DNA is a terrible inconvenience for Darwinism.
You are equating a change (evolution) to Darwinism (Evolution.)