This has been a great education. Thank you. I wonder, then, why does Canon make high MPX cameras?
Just to be clear, I have no argument with someone who wants a 50, 60 or 100 mp FF camera, my argument is with those that say "24mp isn't enough and not up to the standards required in 2021" or "24 mp is low resolution".
When I bought my first 5DS camera I did so because I wanted improved colour definition, not so much resolution and output size. I got what I wanted but I now realise that this was due to the improved tech rather than high mp.
50mp FF does give a slightly superior image at native output size compared with 24 / 26 mp interpolated up, but it is so slight it is really difficult to see, and therefore for the very few occasions that an image is going to be shown at 30 to 36" across, it's not worth it IMO if that compromises the camera / process in other ways; initial cost, speed of operation, processing speed / requirements, data storage etc etc. If you are one of tiny fractions of photographer who routinely produce 36 - 48" fine art prints then 50 mp all the way, but honestly those very few people will want DMF sized sensors anyway. When it comes to real resolution larger format size wins every time. I say "fine art prints" because as the print becomes bigger and bigger a print at lower DPI will actually have more perceived sharpness at the appropriate viewing distance, and so you don't need such a high native output in the first place.
Camera manufacturers have to keep selling their products, and higher and higher mp is an obvious choice whilst the web is awash with experts pointing out how brilliant the data is from these sensors when viewed at 800% on a 5K monitor, so as
@privatebydesign says, the manufacturers will produce what people want, and a lot of people want, or aspire to, very high mp. Lets face it, if the only people who bought a 50 - 60 mp camera were those who really needed that output size, then the cameras would either be 20 x the price or, more likely, not produced at all ! So thank goodness for those people who like to view their images at 800% on a 5K monitor, or crop in to micro 4/3 size and still print 24".
Incidentally I looked at the images in your portfolio and they would be good whether shot on 12, 20 or 50 mp

Content is king.