So, it seems you would like clarification, which I will now provide.
High consumption just means living in a country, usually industrialized, but most world cities count, where the point of life and indeed almost the only "way to live" is by consuming a lot. Buying things and using them and throwing things away.
If you want to take con and argue the West is not a high consumption society, go for it.
Also, "living in a high consumption society" implies that you take part, say you live in an apartment in New York. It is related to income but you don't have to be *rich* to live in a high consumption society. Even American poor people consume a whole lot of say plastic bags, that happens here in Dakar too.
And then the other thing I was mentioning is that if you are pro and say that yes living like this is immoral, I would like for you to state how you believe someone can live in such a society morally, if possible. Like maybe being a homeless man, or whatever, it's not for me to say.
The ways in which you could argue living in a high consumption society is immoral are, for example: consuming a lot consumes more resources than we have for all the people that there are. Witness stats that say we'd need like 8 earths worth of resources for everyone to have an American lifestyle. There is also the environment angle - the more you consume the worse it is on the environment, there is waste produced and energy consumed to make things and resources depleted etc. There is the human angle - if I consume 5X, and you need X to survive, and there are people that have 0.5X, I could be construed as living immorally for not reducing my consumption.
Etc, again, I don't want to steer the debate necessary I just want to let you know what the topic I have in mind is.