Well, I can see how some people might take that the wrong way and interpret that as getting laid off.
And yes - the reality is that companies are non-fungible and every company will have different values, levels of team talent, investment in their team. Taking the same approach to every company you join, i.e. not going in with a goal/plan in mind, is how you get the average/median outcome for everyone at that company. And you should be going in eyes wide open knowing what that outcome is for every company regardless of which approach you take.
It's the same question of why isn't every restaurant great? Why isn't every haircutter great? By definition, that's impossible - some will always be better than others and the goalposts shift.