I'm all for reclaiming 240/4 eventually, if it can be reliably used. But I saw a mention in the article of 0/8 and 127/8, and I hope those never get changed. There are too many systems out there with assumptions about those addresses, and unlike 240/4 where the failure mode is "can't reach the host", for 0/8 and 127/8 the failure mode has security implications.