The Mavic 2 Pro / Zoom do NOT yet have gesture modes. So they are not yet controllable by hand.
What also doesn't work perfectly is the precision landing, it doesn't really work.

But in my opinion both things are not important very important, because the rest is awesome. I land manually and don't need gestures anyway.

Absolutely, no problem

Don't think it's a Spark feature. Other drones don't have a big sensor for these hand gestures.