That's not what that article says. It's speculation from before the display launched. Here is a later article in which the founder of the company says it is lenticular:

https://hackaday.com/2018/11/21/supercon-alex-hornsteins-adv...

"since he happens to be head honcho at a holographic display company he can show us the result. Looking Glass Factory’s display panel uses a lenticular lens to combine the multiple images into a hologram, and is probably one of the most inexpensive ways to practically display this type of image."

"There’s a lot more to the evolution, enough for a book on the subject, but if you had to create a list of what kinds of technology and methodology went into the Looking Glass (since they do not list it), it might look like this:"

Pure speculation.