I had skipped AppleCare on my 2018 12.9”, but went ahead and purchased it (after the fact) after watching the video. It does feel more solid to me than my 2017 12.9”, but I am not sure it would fair as well to drops with the much thinner aluminum edge.
Of course, the last two 12.9" were fragile as well. Both my 2016 12.9” and 2017 12.9” developed cracks without me realizing how. I have owned every iPad model (other than the 10.5” Pro), and the bigger and thinner they get the more fragile they become. The original iPad was a tank!