This has almost always been true.
I think the eco-tards also know this is true, which is why the majority of their surveys ask questions like "Does human activity contribute to global warming?"
Which of course the answer is obviously, with or without science involved, yes.
If you live in a mud hut in Africa, and gather sticks, and make a fire, you are creating heat, you are also contributing CO2. On a purely technical level, you are contributing to global warming.
The question is not "does human activity contribute", of course it does.
The question is, in the broad scheme of the environment, does that contribution make any difference, compared to natural changes?
The answer is no. It's like peeing into the ocean is going to cause global flooding.
Are you saying peeing into the ocean doesn't contribute to rising water levels??? DENIER! DENIER!!! ANTI-SCIENCE!!!
People are crazy. Yes of course it does. But compared to all of nature, it's nothing. Completely irrelevant. Same with man-made CO2. Yes it contributes, but compared to the entire ecosystem, it's nothing.