It looks like it could be made leaner.

This:

    name* = TextInput(
        | question = What is your name?
        | description = 
          Let's get started with the survey. First, please tell
          us your full legal name according to your passport.
    )

Could be just this:

    name* = TextInput
        # What is your name?
        Let's get started with the survey. First, please tell
        us your full legal name according to your passport.