I think it's encouraged due to milestones always being set with unrealistic ECDs, so every project is always behind and there's always urgent security fixes to 'catch up' on (I work on an AWS microservice as an L4 SDE, and joined 2y ago, for context). So you work in the off-hours thinking you're 'catching up' to the work you've 'missed', when in reality that is just the expected velocity to keep pace, and being 'caught up' is an unreachable goalpost.

I personally just learned to hide lack of progress on one task behind the urgency of another new issue, or keep tasks as vague as possible so that I can slow down on some days and speed up on other days. As a result I don't think I work crazy hours, but there's just a constant, fatiguing pressure of the feeling of 'I should be catching up on work right now'.

And I only recently realized that it's degrading my ability to enjoy any time at all, whether its PTO or just after work hanging out with my girlfriend.

This is my first eng. job though and I can't tell whether its better or worse in other places, and I tell myself it's probably better than the hours required at a startup. And I feel bad complaining to my friends when they're almost all unemployed or working gig jobs. /rant