What makes Meta ads infra high stress?

Lots of blinders say Meta ads infra has bad WLB and stress. What’s the cause? Some ideas (I’ve never worked there): - Management pressure - Tooling and systems are unwieldy = high impedance to ship - “wasted” work when projects fail to move metrics = low impact, despite working hard - Operational costs (on-call, maintenance) - Ambitious coworkers = hard to keep up with the pack - Toxicity, backstabbing, politics - It’s fine; ICs just don’t know how to say “no”/set boundaries Asking because I might join an ads infra team.