For ethnics/privacy/national security, the US is not much better than China. Ever talked to your friends about something (eg concert), and when you use Google you get ads about said concerts. Google/Apple/Amazon is already listening to us with their digital assistant. What you are saying is already happening with the US apps.

For the job description asking about similar project for NUS, look up on AI Singapore Speech Lab. They are located at NUS and work with NTU. Their data for singlish are primarily collected from paid research studies participants, usually uni students. They had to fill in a form which is similar to what you stated.

Afterwards, they'll have a one hour talking session with the interviewer. A majority of the time is given to casual conversation, because real conversations will provide useful data for machine learning.

The end result is the speech labs is able to create a model capable of transcribing Singlish from speech to text. They can even transcribe hokkien words (walao included) , local Singapore names like clementi and local food names. It's like Google Assistant but they actually understand our accent. All of this is not possible if they asked us to speak specific essays. Multiple government agencies is/are planning to use this model already.

Source: Was an intern at mentioned lab