Red meat has a huge carbon footprint because cattle requires a large amount of land and water.
https://sph.tulane.edu/climate-and-food-environmental-impact-beef-consumption
Demand for steaks and burgers is the primary driver of Deforestation:
https://e360.yale.edu/features/marcel-gomes-interview
If you don’t have a car and rarely eat red meat, you are doing GREAT 🙌 🙌
Sure, you can drink tap water instead of plastic water. You can switch to Tea. You can travel by train. You can use Linux instead of Windows AI’s crap. Those are great ideas. Also, don’t drive yourself crazy. If you are only an ordinary citizen, remember that perfect is the enemy of good.
It does not even need to be a majority. Actually doing it makes you more believable when you promote any sort of action. It also works as a sort of promotion in itself. As in people can see you cycle, not eat meat or have solar panels on your roof. By doing it, you also create demand for the alternative, like for example solar panels, bicycles or vegan products. That makes those alternatives easier and cheaper to purchase. It also makes it politically easier to ban something, as part of the society is not impacted at all.
In the end calling somebody an idiot, for promoting individual action due it not being an attempt to change society is just dumb. After all anybody who does that promotion tries to bring other people to do something. At that point it really is no longer the action of an individual. Honestly it really is a simple way to lobby against such actions on a bigger scale.