WDYM personal decisions don't matter? Industrial and agricultural sectors, which both in sum contribute 50% of total greenhouse gas emissions, produce what is in demand from consumers. Another 15% of emissions is from personal vehicles. Changing personal habits is the only way we can ever reach some utopian climate targets. Utopian because old habits die hard.
Once again, personal decisions on the consumer side doesn't matter here. Unless all consumers cooperate to force a ban on practices that are bad for environment. However that basically means forcing specific decisions on the 1% that control laws and business.