Younger people are less experienced, have less opinions and in most case less life lessons. Tech companies want to move fast and make money, not question what is ethical.
However, as I've grown and gained experience I have become more pragmatic and willing to let my good work speak for itself, reserving my more vocal moments for the times I have most impact.
I find this almost always to be the opposite.
IME, older workers were raised not to discuss politics or religion at work.
As I've gotten older I've become far less likely to express opinions unless the issue I am offering an opinion on is one that's important, and one that I am able to offer some new perspective on. I wasn't that way at 25.
Older workers have gained the confidence to ask for what they are worth. Employers do not appreciate this. They may have a more efficient way of working or may not have a singular definition of self (work == my identity) and obligations like family outside of work.
I’m not even 40, though close to it, and I’m already here. The company I’ve worked for has routinely offered 4x10 work schedules to its employees but the group I am now in is considering whether to end that practice. I will quit if that happens even though I probably wouldn’t have just five years ago. I have no interest in commuting one more day and losing a day off (and a weekday off, no less, when I can get personal appointments and leisure things done).
With every day that passes, I weight time away from work and time for leisure far more than I do money. Even though I have nowhere near enough to retire and any “low-stress” job wouldn’t pay me enough to live in my metro area, I would still walk away and consider what to do next if that benefit is revoked.