The problem is that people go on Twitter and see the posts from "thought leaders" and "influencers" who say things like "reading the code is not needed". Those people are not working on systems that have paying customers who would cancel their subscription - or worse - if the software became too defective or unreliable.
You only need a handful of occasions of creating massive billing errors for your customer's customers before they will slag you to all their CTO friends and pull the plug. Imagine Stripe began double-charging every third transaction once a week, and couldn't fix it after two months of thrashing because no one there has any understanding of how anything works anymore. They are simply done at that point, all the value of their brand lost.
You only need a handful of occasions of creating massive billing errors for your customer's customers before they will slag you to all their CTO friends and pull the plug. Imagine Stripe began double-charging every third transaction once a week, and couldn't fix it after two months of thrashing because no one there has any understanding of how anything works anymore. They are simply done at that point, all the value of their brand lost.