1) Most every job has stress and the harder you push the more stress you're going to experience. McVay pushes hard, as a good coach should, and he's endured a lot of stress. He's also young and has made some key mistakes and the learning curve is difficult and stressful. We should recognize his stress and understand it is easier for a hard driving guy to get burned out.
2) McVay is wealthy and has a man's fantasy life: coaching football, married to a beauty, and making a lot of money. If he quits he has or could have multiple job offers so he has a huge safety net and he's never going to starve. Other people in life have just as much and more stress in their lives and they don't have a safety net. They have unreliable cars, live in improverished areas with high crime, struggle to make ends meet, etc. They can't just up and quit their jobs because they're stressed out, they've got to suck it up, eat miserable humble pie, and do their best because their future and their family's future depends on them to make a paycheck.
So yeah, we should appreciate the stress McVay is under because it is definitely real, but I'm not shedding any tears for him. I know too many good people who have it bad.