This may be true in material terms but it assumes that material wellbeing is all that counts.

The reason this comment triggered such a strong reaction is that it dismisses the emotional distress that goes along with being at the bottom of the socioeconomic pile.

Factors like student debt, medical costs and the general costs of living in many places put many people into profound distress, that can turn into unbearable chronic misery, for which air conditioning seems like small consolation.

I agree with your overall point, and I am one of those that is able to take an optimistic view of the future and trust that problems that seem like existential threats now can be resolved in time.

But I'd urge you to be sensitive enough to anticipate the kinds of reactions you'll trigger when you make a claim like this, even if it's true by the narrow definition you've chosen.