Agreed. I am curious whether some would lean towards crop with the better lens, or RP with full frame IQ and better ergonomics, but size and price would be a negligible factor in this comparison, which is kind of the point.
One (wood)man's (!) ergonomics are another man's...something or other (no snark intended).
I have posted dozens of images on the CR forums (mostly birds). My trusty 5DMkIII/100-400 II combination is the source of most of these images. I also dabble in acquiring images for times of astronomical significance (eclipses [total eclipses are really cool]) and the recent Jupiter/Saturn convergence come to mind)...where Canon's teleconverters are quite useful...again with the 5DMkIII...where the ergonomics of the large 5D-sized body are of paramount import.
I look forward to purchasing an R5 in the next few months.
But...
...while I have sold a few photos, most of my photo/video efforts are not of the commercial variety...and our family's photos (31K posted online and counting) are important to all of us...and I love the hobby.
A large percentage (half perhaps!?) of our best and most cherished photos center on our family outings and vacations and concerts and sports.
And starting with Canon's S90 (then S95) and moving to Canon's M series...Canon's larger bodies...while STILL OF IMPORT...aren't my go-to for family photos.
And the M2 (which I purchased from a shop in Canada during that time interval when Canon USA said 'no' to the M) and M10...(and I presume the M100 and M200)...are tiny when mated to the 22mm f2 lens...which my daughters utilized extensively when traveling Europe half-a-decade ago.
The M6MkII is a wonderful piece of technology...and it, along with the M6...when connected to the EF-M 11-22...is really really good at what it does...and is really tiny...so tiny (and low mass) that flimsy consumer camcorder tripods are sufficient when we all want to be in the picture at Disney's Epcot Center.
So for many of our uses, the ergonomic argument tilts heavily in favor of the M series of Canon products.
To circle back--in these pandemic days (no traveling)...I've been utilizing the 5KMkIII much more than the EF-M bodies.
But is simply unfathomable to me that Canon will put a stop to the EF-M series...and I really would like to see M-format sales figures from countries other than the USA.
My two cents.
Thanks for reading.