Nah its not just NZF. 
ACT and National have gained substantial disaffected and antis.
Those that do not like seeing someone else get a home insulation grant.
Public transport initiatives.
The cleaner car discount and support to extend charging networks etc.
Farmers a traditional National base, and so it goes

It's why Blue Greens can't get out the gate, National have steadily become less interested. 
ACT, and NZF just give National more cover to do nothing. 

Talk is cheap so an economist would say its efficient use of time to kick that can down the road.

So we get stuck between' just kicking that can' and the emergency' do everything all at once' crowd.

Vs consistent progress, infrastructure upgrades contribute to GDP, and set us up for the future.