For contrast, it took me 10 minutes to change the battery in my car.
Also, it really doesn't take three hours to swap a phone battery, even in our sad state of planned-obsolescence affairs. That's pretty extreme. As I wrote elsewhere in the thread, I did an iPhone and an Android last year and each took less than a half hour. The iPhone was fiddlier, but it was also the first I'd done. The Motorola was surprisingly forgiving. But I agree, gluing mass-market devices together is bonkers and only benefits the manufacturers.
The replacement guide suggests about an hour to complete the task. https://www.ifixit.com/Guide/Google+Pixel+6+Battery+Replacem...
For contrast, some people need YouTube videos with step-by-step instructions to even open the hood of their car. They will take far longer to replace a car battery than it took you. Likely they'll also need to purchase a screwdriver.
My frustrating experience with lots of older tech like cameras and laptops is that the battery formats are constantly changing, and none are being manufactured in the required format 5+ years later, when I'd really want a fresh battery.
So even though it is designed for easy field replacement, it is effectively obsolete because the only product available is some dodgy counterfeit part. You never know if it even meets the specs, avoids being a fire hazard, and isn't an outright fraud like relabeled old batteries...