This. Unfortunately, this industry (especially startups) embraced the low-end of several untyped programming languages that are used in production-grade system

This. Unfortunately, this industry (especially startups) embraced the low-end of several untyped programming languages that are used in production-grade systems and evidently there's a price being paid by those choices. Java, Kotlin or even C# would be a much saner list of statically typed languages to use and testing code written in those languages is much easier to reason with.