I am not talking about capitalism. I am talking about the survival of humans and the ecosystems around us. We need to battle climate change. And the industrialized cow agriculture is one of the biggest problems in that.

In particular, I also consider it more optional than e.g. heating rooms in the winter. The excessive consumption of milk products and meat only started after WW2 and is widely considered unhealthy. Food experts have been begging for us to eat more veggies, for decades.

Capitalism will not work for this. We need to financially support farmers in transitioning to more climate-friendly options. Humanity as a whole fucked up in that regard, and we need a solution sooner rather than later.
Waiting until capitalism badly self-regulates, that will cost us more and more of the ecosystems we depend on, and force more and more ethnic groups around the globe into extreme poverty, into political instability, into dictatorships and terrorism.

The sooner we have a solution, the better for humanity as a whole, but I absolutely do not see a reason why this would need to happen at the cost of farmers.

And I do not have a problem with heritage. If we go back to pre-industrial levels of cow agriculture, that's plenty good for battling climate change.