Sean, one significant correction:
You mentioned that DSLR's do not offer 5axis in body lens stabilization while some mirrorless cameras do. Not true at all.
I know for a fact that Pentax for one has offered this for several years now, one example being the Pentax K1, and their KP being another. I believe even their budget priced entry-level K70 includes it as well.
You should edit your article one you've confirmed this for yourself.
BTW this is overall a very fair assessment IMO. Very well written sir.