stopping or reversing climate change would require sacrificing far more than 50% of 1/3rd. it would require sacrificing every comfort and convenience you don't bat an eye about. forget heating and cooling. forget taking warm showers every day. forget having things delivered to you from 5000 miles away, or even 500, so forget about most things. forget those plants you consume being affordable and available year-round, and prepare to spend the bulk of your income on simply surviving.
basically, imagine returning to per-industrial times, because that's what required to achieve the goals you believe to help achieve by abstaining from burgers.
It's not about stopping or even reversing climate change, it's about slowing it down and tapering it off so living on this planet doesn't become so unbearable
Who's the one moralizing others on the internet now? Telling others the only solution is to either sacrifice everything or do nothing? Simply not fact based.