The issue here is an upgrade of the NBN.
NBN provides a connection to every home for free. The connection is what NBN considers adequate and within technical constraints.
There are users who want more bandwidth for various reasons.
The analogy here is your electrical supply to your apartment. It’s sized for the typical family. If you decide to install a large air conditioner , then the supply to you unit needs to be upgraded, and that’s at your expense.
Using the electrical analogy, users who want more bandwidth to their NBN should pay for the upgrade and those who don’t want it opt out.