Just a note about that video ... the guy said he hasn't used RPG Maker in 10 years. So a LOT of the stuff that's in MV and was also in Ace, VX and XP is new to him. He did not necessarily focus on, or even mention, a lot of the new stuff in MV.
I think he did a really good job with the video, but it would be of more interest to an audience who were new to RPG Maker (like his YT audience), than to our members here, who are more interested in the differences between previous makers and the new one.
Don't think everything you see in the video is everything there is to MV