Hello. Thank you for contacting the Toolset support.
Actually - there is no native feature available with Toolset views to export the View's result to CSV format.
The link you shared as you can see the solution shared by the user and not from Toolset support. This is a pure custom programming request and as per our support policy, we do not entertain custom programming. You may need to adjust your code as required or hire the programmer.
If you need custom programming for your project, please feel free to contact our certified partners:
=> https://toolset.com/contractors/