It has been a bit since I watched the video, but I think it stated our 23.5 degress were decreasing in the sense that we have reached the 24 some time ago and it is now decreasing again which would mean we would naturally begin cooling again.

It's actually not difficult to differentiate, it is just a rather long and boring explanation. If you really are interested in the topic I can only recommend 'Climate Change is a Nightmare' by UpIsNotJump. It is not highly scientific and does a good job at explaining the topic in a rather short, easy to access format. It also debunks statements like 'we are just in a warmer part of the cycle' etc.