Where is this advice coming from? 250k is globally a solid wage. If you get fired and don’t have a better option lined up after doing 1 percent effort how does that play out?
If my boss makes 100X I do, I will be doing 100X less work than them. How hard you work doesn't really have anything to do with you being fired or not, just try to be nice to those above you in the org chart and you'll survive as long as anyone else who doesn't make waves.