Motorola won't change a thing about hardware attestation. GrapheneOS is locked out from reCAPTCHA because GrapheneOS is signed by GrapheneOS and not by Google.

The way it's going, by the time the Motorola + GrapheneOS phone is out, it will be a lot more painful to use GrapheneOS than today. Not because of GrapheneOS of course, but because everybody accepts that bullshit Google is doing.

If you're waiting for Motorola + GrapheneOS, you could start complaining to banks and other apps that don't support GrapheneOS :-). If enough people did that, maybe those companies would consider it.

I'll be waiting.

In the meantime, I'm currently using a low end Motorola moto g 5G 2023 which lets me turn off Play Services. Chrome and the Google Calendar don't run (really do need to find a replacement calendar), and I couldn't be happier. Motorola's interest in GrapheneOS makes me wonder if they did this on purpose.

Or if you need it now, Pixel + GrapheneOS. Pixel A-series are really affordable. E.g. the 9A is 350 Euro here, have great device security (Google Titan M2 hardware security processor, CPU that supports MTE, etc.), pretty good cameras/camera processing, etc.