Comment by bluerooibos

> Removing QA makes developers care about production

And removing Product Managers makes devs care about the product. Therefore, we should strip away all roles apart from devs..?

These roles exist because the skill set is sufficiently large to justify a dedicated role. If you're a startup, sure - maybe it's better to be lean - but in a larger org, QA folks are worth the investment and can definitely help to spot things that devs may not otherwise catch themselves since they know the product intimately and likely learn of common pitfalls. The few QA folks I've worked with have been worth their weight in gold.