No, this isn’t a porn title: here’s a claim that Roman civilization collapsed partly because Europe passed “peak wood”.
Let’s leave aside the question of what Roman civilization means, and whether it collapsed in 44 BC, 391 AD, 395, 476, 1453, or some other date. If I remember correctly, much Western European farmland reverted to forest after the Black Death of the 14th century, where there was a huge decline in available farm labour — there’s actually more forest in many parts of Europe now than there was before the Bubonic plague.
And that’s the problem with tossing around silly phrases like “peak wood” — you don’t have to do anything to reforest — just stop working to keep the forest away. If all humans left North America for 20 years and then returned, we’d find that our farmers’ fields, sports stadiums, backyards, parking lots, and even city streets were already well on their way back to being forests. Fossil fuels, unfortunately, don’t work that way (at least not in a human time frame).