It isn't true that the "hysteria" about global warming has been based on the "hockey stick" graph. Climate scientists would still have a very credible case for projecting a dire future without this graph. Actually, the
science itself and the projections for future climate change are not dependent on this graph.
Many subsequent studies have produced a similar graph and several studies indicate that the current warming is globally synchronized, except for Antarctica, and unprecedented in the past 2000 years. Past periods of climate change during the past 2000 years were not globally synchronized.
The graph shown in the OP of Tim Ball's version is represented as a graph of Climatic Changes in Europe whereas the Hockey stick graph represents the entire globe. Why compare apples with oranges?