GrapheneOS has benefits even when used with Google Play Services. At least on the primary profile, you can install the Phone by Google and get good call spam blocking. Other apps that you’d prefer to be siloed can be put on another profile without play services.

Not easily, perhaps. But it’s certainly possible. We already have space technology for unfolding small packages into large sheets. Not to mention, you don’t need a single 100m collection surface when you can accomplish similar things with many smaller surfaces spaced apart. See the Very Large Array.