Rare Look Inside the Secret Lego Museum

This is basically a fluff piece about Lego with a side helping of climate and sustainability topics. It’s not a particularly good article in my opinion. I think the most fundamental question facing Lego is that clone brick makers are now able to deliver excellent sets at significantly lower cost. The article doesn’t mention that at all.

Why is it bad that one of the key components of plastic is fossil fuel? Isn't locking it up in plastic preferable to burning it?

If they are referring to the energy cost of manufacturing it, that's got nothing to do with the raw material being fossil fuels.