A little nostalgia -
The attached photo was taken by a now 26 year old Sony Mavica MVC-FD98, one of the four shots that fit full resolution on a 3 1/2" floppy disk.
This is a 2.1 Megapixel camera that I own and still use it occasionally, but had to buy an external USB floppy disk reader to keep using it with newer computers. It can produce great 8 X 10 photos, though enlarging much bigger than this causes pixelation. I paid about $1,200 US for it in May of 2000. This photo was taken in the North Carolina Transportation Museum of the engine and cars being used for the train ride around the museum property that day. The property at one time had included a full railroad service shop and roundhouse for the Southern Railroad, now Norfolk & Southern, and it was donated to the State of North Carolina for the Transportation Museum about 50 years ago. It was no longer being used, as it was designed and built for the steam railroad era, and with a little modification to handle the early 1940 and 1950 diesel engines. Fortunately for me, this museum is located about 25 miles Northeast of my present home. Although it's mostly railroad related, there are many sections of the museum inside of the former restored railroad shops for displays of other forms of transportation. Airplanes, trucks, cars, wagons, etc are all represented there.
This attached photo is straight from the camera with no post processing at all. So, is a 50 or more megapixel camera really necessary when 2.1 megapixels can do this back in 2000 ? For me, the only benefit of more megapixels has been the ability to crop small areas of photos for printing larger. My present largest camera is 34 megapixels and is a Canon 90D. Over my years as a photographer since 1952, I have owned most all of the major brand cameras both film and digital at one time or other, but right now I'm back with Canon. No mirrorless yet, since all of my 4 present in-use Pro cameras are all less than 5 years old, and I'm 84, so I may not ever own a mirrorless camera.
Experiment with this attached photo. Print it out at 8 X 10". I think you will agree that you don't need high megapixels to get good shots if you don't need to crop.
Charley