A Steam smartphone implies to me its main purpose is to play PC games and not caring about the other stuff. And no, for that reason I wouldn’t buy a Steam smartphone. Because playing games on mobile phone sucks, for controls (and I always need a controller in addition), battery life and size. And its probably as expensive as a PC. I would rather buy a dedicated handheld, if its available in this form. And if its based on Android, its a nogo anyway, for privacy reasons.