I mean, maybe you exaggerate to make a point but there are practical limits to what you can exercise your way out of. I set a challenge to myself to jog a half marathon every day for a year. From January 2022 through January 2023 I jogged 22km a day seven days a week for 367 days. I also did light weights and exercises for my upper body. I burned around 4000/day, as best as I can track with my Garmin watch. Which throw in a couple of milkshakes and you can blow through 5k calories in a day.

I will say, I did struggle to keep my weight up with such a regimen and a fairly healthy diet and dropped to 150lbs at my lowest (6'2"tall). But if I wanted to eat more calories I could easily get there with fried food and ice cream.

Edit: and for most people this is completely infeasible. Most people don't have the time flexibility to wake up at 4 am every day and put on those kinds of miles.

You exaggerate, but there are some limits to how much energy the body can use in a day.
https://www.news18.com/news/buzz/cant-burn-more-than-4000-calories-a-day-says-new-study-on-limits-of-human-endurance-2182029.html

You pretty much can't. You'd need to run for 6-8 hours per day to burn 8000 calories. For most people who are not professional athletes, that's impossible between work and sleep. To get much beyond 1000 cal/hr output, you need to get into the anaerobic region, which will exhaust you long before you can burn 8000 calories.