Here is a graph with the same data. It shows the same correction for the early 1900s, but everything after 1940 is higher than shown on your graph, even for the uncorrected data.
Which one is correct? Is my unsourced image more or less correct than your unsourced image?
Neither. None of us here are climate scientists, and we are never going to be. Steve might say that we should all be more skeptical. And that's true, which is why skepticism and confirmation are at the root of the scientific method. The experts who do climate research
do question the results of other researchers, and
do work to confirm the results of others. That is how the scientific community works. But they do so with a deep understanding of the methods and models and statistical tools that are used to generate these results. That's what it is to be an expert.
We normal folk have no choice but to either believe in or reject the scientific process. And rejecting the scientific consensus of thousands of experts and an entire community of researchers is simply just rejecting science, and rejecting the entire notion that experts exist, or that there is value in having expertise at all.