My experience was that enterprise programmers burned out on things like WSDL at about the same time Rails became usable (or Django if you’re that way inclined). Rails had an excellent story for validating models which formed the basis for everything that followed, even in languages with static types - ASP.NET MVC was an attempt to win Rails programmers back without feeling too enterprisey. So you had these very convenient, very frameworky solutions that maybe looked like you were leaning on the type system but really it was all just reflection. That became the standard in every language, and nobody needed to remember “parse don’t validate” because heavy frameworks did the work. And why not? Very few error or result types in fancy typed languages are actually suited for showing multiple (internationalised) validation errors on a web page.

The bitter lesson of programming languages is that whatever clever, fast, safe, low-level features a language has, someone will come along and create a more productive framework in a much worse language.

Note, this framework - perhaps the very last one - is now ‘AI’.