The comment you were replying to didn't examine why people don't fly flags in front of their houses merely stated that they don't. I can't see how you could disagree with that - it's very self evidently true. He also stated that most New Zealander's don't really care about the flag. Poll data also strongly backs this up.
In terms of subjective opinions, however, OK yes you might feel that it would be nice if people in New Zealand flew their flag more and/or were more patriotic generally. You're definitely entitled to your opinion. Personally as a kiwi the common sense lack of patriotism and/or nationalism is one of the things I like best about the place. It relates to a general no-nonsense pragmatism that I find a breath of fresh air after years in the united states where simply pointing out that maybe the US could learn a thing or two from other countries (in certain areas, not including pizza, software or spaceflight of course) is met with emotion instead of rationality.
In terms of subjective opinions, however, OK yes you might feel that it would be nice if people in New Zealand flew their flag more and/or were more patriotic generally. You're definitely entitled to your opinion. Personally as a kiwi the common sense lack of patriotism and/or nationalism is one of the things I like best about the place. It relates to a general no-nonsense pragmatism that I find a breath of fresh air after years in the united states where simply pointing out that maybe the US could learn a thing or two from other countries (in certain areas, not including pizza, software or spaceflight of course) is met with emotion instead of rationality.