OK. Sorry. That's just popular press junk. The doom and gloom scenarios are going to bad enough as it is (economic damage beyond what most of us are use to, agricultural infrastructure collapse and extremes in food prices and availability).
Why does that matter? The only reason you know about the past temperatures on earth (BEFORE human society existed) is because of the same research that helps us know that the CURRENT warming is NOT explicable by natural forcings alone. The same people who told you about the warmth in the earlier Holocene are the same people who are telling you today that AGW is real.
The reason it matters now to us is because humanity has established societies that have existed in a relatively stable climate for about 14,000 years (since the first settlements). Sudden changes will wreak havoc. And that's what we're facing. Geologically speaking it will be in the "flashest of flashes". Society won't deal well with it. Especially if we have to waste decades trying to convince the scientifically illiterate that science is real, even if they don't like what it says.
MWP likely wasn't global. The rest of the globe was actually cooling at the time. That's why MWP isn't considered a significant factor in this discussion.
Temperature change over the past 2,000 years has shown pronounced regional variability. An assessment of all available continental temperature reconstructions shows a clear twentieth century warming trend, but no evidence of a coherent Little Ice Age or Medieval Warm Period.
www.nature.com