After watching this video, I was curious about Scaeana 3.2
Video could not convey whole scale and deep bass but if you have keen ear, you can catch the overall performance.
When I happened to see the listing for used Scaena 3.2, I jumped at it on Dec 2019
Funny thing is that I could not assemble it for 2 and half years since I could not ask other people to help me on assembly during Corona Pendemic.
After doing the job with help of one WBF member, I could get the sound I want only after adding Rel 31 subwoofers.
Without Rel, the deep bass was missing.
The advntage of line array speaker is realistic soundstage with deep and wide soundstage.
The conclusion is that video could be of help to the people with keen ear, but could mislead some naive people without much experience.