Makes you look really successful (they pay a lot, so they must be super profitable!) and helps, at least partially, select employees who won’t be asking questions, just do their job and collect paychecks.
Growth without proper management papers over a lot of stupid hiring decisions, 'because we need more people ASAP'.
But the main issue here is that someone without any special skills ended up making a shitload of money as a fluke by working at Binance for a short period of time. It's very unlikely they're going to be able to get another job even nearly that good, let alone more jobs 20% better, because they don't actually have real marketable skills and it was just a fluke.
They were talking about how wages at most jobs stagnate if you are a long-term employee. Which I find to be true as well.