You do have a point, and I agree that making the production-side clean should be a large focus, but there are valid arguments for reducing consumption, too, I think.

Supply of energy is limited, and so there is a market effect: overconsumption by some players can increase the cost to other consumers.

Market economics should mean that the resulting increase in profit margin turns into an opportunity for more-cost-effective competitive entrants.

Most of this assumes no collusion between players in the market. If, for example, company A provides a product that is knowingly energy-inefficient and half of their board members also sit on the board of energy company B that is experiencing record profits -- and could easily acquire company C that theoretically has a cheaper energy production solution -- then perhaps problems could occur.