"いずれにせよ、自分の子供が成長して大人になるために書くことは、自称「成熟した」批評家がしばしばそうである子供のために書くよりも健康的です。"

Simplified Meaning:

It's better to create things that will help and inspire the grown-ups our children will become in the future, rather than trying to please adults who act immaturely. Imagine you're a writer or a creator. If you focus on making stories, art, or anything else that will help kids grow into smart, thoughtful adults, you're doing something valuable for the future. On the other hand, if you only worry about what critics think – critics who might be acting childish or just looking for faults – you might miss the chance to make a real difference. Think about a teacher who tries to inspire their students to think big and dream for their future, instead of focusing on impressing other teachers who might be stuck in their ways. By investing in the growth and well-being of children, you're helping shape a better, more thoughtful, and mature future. So, aim to make a positive impact on those growing up rather than seeking approval from those who may not appreciate it.