Weight is also due to the cameras being built like tanks - they need to be absolutely dependable in any weather and survive drops bangs and falls. Most pro bodies are made with a rigid metal frame and are waterproofed with seals. They also have to hold lenses on the front bigger and heavier than 6lbs in a lot of cases.

I agree with both sides. if you want to experience a manual camera lacking controls visit the Nikon 1 series which has mostly a horrible user interface. The flip side is something like the Z9 which has touch, buttons and knobs everywhere.

The only questionable thing is 5G since cameras usually are built for 5 to 10 year working lives and live on for many more past that. Tethering to a phone seems like a fair compromise that also gives great battery life.