That guy in the video was a bit too much.
Why is "cash" a red flag? What does that bring up for you?
Zencash is certainly aiming to tout the community/ecosystem, from what I gather on the Slack. There have recently been new logo designs floating around and there's currently a Tagline competition. So, we'll see I guess, but I think a bunch of the things you are looking for are happening. It's just very early in the game for this project and I guess we'll see if there's staying power.
"Cash" is an overused term. It's like all those companies having a .com at the end during the dot-com bubble but less severe. When a small crypto use the term people will be subconciously thinking of all the big coins that have "Cash" at the end. Then there are lots of scam-ish coins with "Cash" at the end. You loose originality and also get negative impressions by using "Cash".