No, the evidence is fairly overwhelming. Asserting that it is not does not make it so.

But let's skip the fact-finding part; plenty of more qualified individuals have already done that. The basic scientific principle of carbon dioxide as a greenhouse gas is unquestioned. The fact that the concentration of carbon dioxide in the air is increasing is also unquestioned. Therefore, the heat retention of the earth should be increasing. Why would it not? The base assumption in science is not to ignore what we already know about science.

The models are imperfect, the data collection is imperfect, so the projection are imperfect. But an inability to forecast the precise manifestation of climate change does not invalidate the principle.