I'd pick a phone over Raspberry Pi any day.

This repository provides a simple-to-use automated script to configure a Raspberry Pi to use xCORE VocalFusion for audio. The setup script will: Disable built-in audio Enable I2S, I2C (100k baud), and ...

Note that for some devices (e.g. Raspberry Pi), at the end of the flashing process the tool tries to customize the SD card e.g. it configures a hostname or WiFi. And with a cloud-init enabled image ...