Earlier quoted context omitted.
> Very nearly 100% of experts in this field agree it's happening, have agreed for quite a while, and think the impact will be dire and potentially irreversible in the timeframe of human lifetimes. The consensus regarding climate change (and human's role in it) has been exagerated[0] [0] https://daviddfriedman.blogspot.com/2014/02/a-climate-falseh...
Your source is a random blogspot.com who claims that there's ambiguity because they consider the term "caused by" to be ambiguous. I stopped reading there.
The argument relates not to climate science itself, but to the methodology on study measuring the consensus of climate scientists. It's pretty easy to follow.