Political change is needed to achieve any of this. Changing your individual behavior or even the individual behavior of everyone you know – while certainly not wrong! – won’t solve this.
This is like trying to abolish slavery in 19th century US by not owning slaves and trying your very best to not buy anything that involves slave labor … laudable, but not a way to abolish slavery.
The interaction between individual behavior changes and political changes is interesting and to my mind where lots of interesting stuff happens. I’m not 100% convinced that politics is always downstream from culture and culture is downstream from individual behavior changes but I do agree that there is an interesting interaction happening that’s worth looking at and addressing.
The abolitionist in isolation certainly will not be able to abolish slavery, however their individual behavior might contribute to an atmosphere where slavery is ostracized and seen as more obviously evil by more people, thus making it easier for politicians to make political decisions that ultimately lead to the abolition of slavery.
I think that is why it is always so important for me to point out that it is certainly never wrong to individually behave in a way the limits your own individual contribution to climate change. I mostly have a problem when that‘s the end or even the main focus of it. Climate protection to my mind is most effective when it is tightly coupled to clear political demands. Too often individual behavior changes are used as action terminators. My impression is that individual action is often presented (as here) as a complete solution to climate change when it is anything but.