Pixel count is really overestimated, I am with you, 24 MP is perfect for full frame for most applications - if you do not need to crop severely. In fact I was really happy with the 22 MP of my 5D3 back then. Only in wildlife photography with tele lenses more resolution really makes sense, so you can crop. I decided to go for an R7 which gives me even more "reach" than a 45 MP FF camera, when I shoot wildlife. For other settings, my 5D4 with 30 MP is even more than I need. My wife still uses some of her old 12 MP Nikons. A3 photo prints from those cameras show rich details, so you could easily sell them to spec fanatics as prints from a 60 MP camera - they would believe it.
I think that your opinion about lots of pixels is just as wrong as that of the pixel enthusiasts. It depends on what you are recording and why. The narrative of the printed photo is often used, but in 2023 it has already become a rare case of photo exploitation. Today, high-resolution photos are processed digitally and used in many different media. With only 12Mpixels, you no longer need to deliver photos there.
But it doesn't always make sense to work with a high-resolution sensor. Low light works better with fewer pixels and larger ones. The lower resolution requires less computing power, saves energy and is faster when saving serial images. It just depends on what you want to photograph and who is processing your image.
Another popular narrative is that the lens has poor resolution. Yes, if you reach into your retro drawer, it may actually be the case that your lens is already at its limit at just 30 MP FF. In the last 10 years, the quality of lenses in terms of resolution, contrast and edge sharpness have become significantly better than most bodies can capture. I just want to remind you of the very good ART lenses from Sigma. Example Sigma 50mm Art f1.4 or Sigma 105mm f/2.8 EX OS HSM Macro, Sigma 180mm f/2.8 EX OS HSM Macro.
Some Canon Ls are incredibly good - for example EF16-35 L f/2.8 III or EF70-200 L f/2.8 IS USM III.
These all resolve easily, including the 50MPixels. I use these and a few other lenses on an EOS 5Ds, EOS R5, EOS 80D, EOS 5DM4 and EOS-R. No one can take anything away when it comes to resolution. Anyone who takes an EOS 5Ds to a concert has not understood the essentials.