I believe the recommended[1] way to deploy Talos to Hetzner Cloud (not bare metal) is to use the rescue system and Hashicorp Packer to upload the Talos ISO, deploying your VPS using this image, and then configuring Talos using the standard bootstrapping procedure.

This post series is specifically aimed at deploying a pure-metal cluster.

[1] https://www.talos.dev/v1.5/talos-guides/install/cloud-platfo...