If all he wanted to say is "this infographic should have included the last 400 years instead, so people aren't misled by learning about the Little Ice Age", "pr

If all he wanted to say is "this infographic should have included the last 400 years instead, so people aren't misled by learning about the Little Ice Age", "proponents of global warming aren't engaging with the facts in an honest and forthright way" is a very poor way of expressing that.