Is CommonMark really Markdown "compatible"?

My bad, I only looked at the source editor of markdown files, where I can’t spot it::

Is it somewhere on StackOverflow too? It should be, being the USB-logo equivalent and all.

But this discussion is pointless anyways if just a tiny bit of my argument is picked out and proven (partially?) wrong while the rest is ignored. The logo isn’t widely adopted yet so there’s no point to cling to it. To me this feels like the name war is being continued here for the same childish reasons. (Don’t bother “replying”, the topic’s clear to me now)