If you can’t grasp YAML, you’re in trouble in the future. It’s been around for decades at this point, and it’s a helluva lot more readable than JSON, which is the currently most transmitted format over the wire on the planet.
YAML is also used by all the big configuration languages out there, Infrastructure as code frameworks, and even novice stuff like Square space.
Second: ZWave is a protocol. HA supports that as well. Had nothing to do with HA as a platform, they just support it. You have no idea what you’re talking about. Example: I run Zigbee for everything on my HA. I could switch everything to ZWave tomorrow if I wanted.
This is a “you” problem, not the rest of the world.