A better release date would have been April 1st.
Dusted Photoshop (and all of Adobe Creative Cloud) years ago. My Photoshop replacement Is Affinity Photo. It is superb and, very unlike Adobe, sports an excellent support community. Can't recommend it enough.
Canon reached another milestone with its production of EF lenses, hitting the 130 Million lenses manufactured mark last summer. They are ubiquitous. There is more range in quality and design, by far, than any other lens mount. Nothing even comes close.
So, for a budget-minded camera system like the pocket 6K what else would you choose? There is no match for this mount. There is a lens that fits EVERY budget from inexpensive to over-the-moon crazy expensive cine-style offerings. There are multiple brands (apart from Canon) producing a myriad of variations.
For this particular camera it is the perfect system. Perhaps RF will one day have the same stature but that day is a long, long way off.