I have seen this comparison to Tor before. There are similarities related to the mesh overlay which OpenZiti operates. Sessions are routed according to a policy which can be security or performance-based (natively its routes to the lowest latency). Nodes can be in any location around the world. Packets, as they flow, are synthesised to look like 443 (i.e., cannot determine the app type based on ports) and have metadata encrypted so that the only thing visible if someone intercepts are the public IP of the next hop, nothing related to source, destination or that its OpenZiti type traffic.

The major difference is that Tor is designed to be a decentralised, anonymous internet whereas OpenZiti is a private overlay operated with trust and identity. But to an outsider to an OpenZiti network, they would know little about what was going on like Tor.