Yes that is correct, Apple Silicon only, I wanted a clean install of the RC so I DFU restored my M2 Air and M2 Mini using the IPSW on the Apple Developer site as soon as it was available, I use Finder instead of Apple Configurator but either works fine.
I believe Sonoma introduced the ability for Finder to be able to restore or revive a Mac, earlier macOS versions require Apple Configurator 2.
I am not certain but you MAY run into an issue restoring prior to general release if the source Mac isn't on Sequoia, I may be getting confused though, could have been a beta thing, I'm sure someone else can correct or comment on this. ("A software update is required" - MobileDevice.pkg)
Personally, my preferred method for a clean install is running a DFU restore on a T2 or Apple Silicon Mac, I do the same with any other Apple device that supports a DFU restore. T2 requires a USB installer or internet recovery after the DFU restore. Apple Silicon is ready to use straight after the DFU restore, just like an iPhone or iPad.
I believe there is no way to clean install Intel models until general release or whenever the full installer is available, I'm very much looking forward to clean installing my 2019 iMac.
With how close we are to general release, I recommend waiting just in case there is a newer build. Not long now.
Rarely, a Mac with Apple silicon or the Apple T2 Security Chip might stop responding and need to be revived or restored by another Mac.
support.apple.com