Academia is full of either/or beliefs. You can either be a strong researcher or a stellar teacher. You can either have work-life balance or a successful career. You can either take care of your mental health or excel in your job. You can either get a tenure track job and be happy or be stuck in non-TT, non-ac jobs and be miserable. You can either be an administrator or a faculty member. And so on.
When it comes to writing, numbers like word count and page count are abstract goals: targets that we have to reach or boundaries that we struggle to remain within.