I want to know the answer to the following question:
What classes in the 16th century sneered at the pronunciation of Dutch by rural people?
All the background I'm provided with is that "Instead, he argues, this development has been artificially frozen in an "intermediate" state by the standardisation of Dutch pronunciation in the 16th century, where lowered diphthongs found in rural dialects were perceived as ugly by the educated classes and accordingly declared substandard.". Is that enough to answer the question?
Answer: yes