You may forget what 2015 was like. The Oculus Kickstarter was in 2012. By 2015 there were a lot of people questioning whether or not the CV1 was actually going to happen. Yes, we had the DK1 and DK2 at that point, but we're not actually talking about a very long period of time here. Magic Leap first formed in 2010. It's said that the iPhone took 7 years to develop, basically in secret, for an established company with consumer electronics experience, with other products to live off of.
I've been pretty critical of Magic Leap and their teasing in the past, and while we haven't seen any real evidence that the product is real, we also haven't seen any real evidence that it isn't.
I remember, and I don't recall anyone seriously doubting whether or not CV1 would happen. Plus, as you say they had publicly available prototypes. The original Kickstarter had real videos of prototypes and John Carmack saying it was great. Totally different situation.
That was my first reaction as well, but there is one article online by someone who's used the device. It sounds more mature than I assumed it'd be viewing this landing page [0]
"I noticed that when I moved or looked around, her eyes tracked mine. The cameras inside the Lightwear was feeding her data so she could maintain eye contact."
IKEA's products as listed in the catalogue can be ordered (and, if required, build). Magic Leap cannot be build and has yet to deliver.
Even if Magic Leap will ship, their secrecy is unwarranted because they don't have any credit as a company. Compare to Apple's secrecy: they do have credit.