Satin mammoth not woolly mammoth?

Mammoth changes in last few thousand woolly mammoth DNA due to extinction on isolated Wrangel island or genetic changes due to electromagnetic catastrophe?

The rest of the woolly mammoths were not wiped out or ridiled with genetic diseases to make them near extinct. Were they part of a mass wipe out of life on planet Earth on a mammoth scale?

There is the free The Extinction of the Mammoth ebook by Charles Ginenthal that explores this further.

woolly Mammoth changes in DNAScientists think the genetic mutations may have given the last woolly mammoths “silky, shiny satin fur”. Mutations may have also led to a loss of olfactory receptors, responsible for the sense of smell, as well as substances in urine involved in social status and attracting a mate … they found “many deletions, big chunks of the genome that are missing, some of which even affected functional genes”.
DNA clues to why woolly mammoth died out | BBC

We observe an excess of deletions, an increase in the proportion of deletions affecting gene sequences, and an excess of premature stop codons in response to evolution under low effective population sizes. Large numbers of olfactory receptors appear to have loss of function mutations in the island mammoth. These results offer genetic support within a single species for nearly-neutral theories of genome evolution. We also observe two independent loss of function mutations at the FOXQ1 locus, likely conferring a satin coat in this unusual woolly mammoth.
Excess of genomic defects in a woolly mammoth on Wrangel island

Satin mammoths not woolly mammoths?

Is the most important discovery that perhaps the mammoths coat or fur changed from the classic woolly mammoth to satin mammoth?

Are these possible changes part of the rapid electromagnetic evolutionary changes, similar to the dinosaurs now appearing to be anything other than just pachyderm skinned animals?