That's a bit dishonest as the CO2 level has risen by almost 50% from pre industrial times so you would need a very narrow definition of human activity.
It doesn't matter if the sun and the clouds have more effect. It only matters that one variable is changing, slowly but surely pushing the equilibrium.
Actually there are various climate and other scientists who have this position. These scientists usually don't depend on grants and such for research.
The thing is, whomever I will link, you will have some accusation that the scientist’s opinion cannot be trusted for whatever reason. So discussion regarding this issue is kinda pointless anyway.
Time will proof these scientists opposing the human induced climate change narrative to be correct however.
