The author writes that due to Google Play Services, most Android apps are in fact Google Play apps and couldn't be used on a non-Google version of Android without a significant rework. I believe there's already a significant body of work on providing drop in replacements for Google Play Services, e.g. microG [1]. There is nothing that stops a manufacturer from providing microG instead of Play Services and hence cutting Google out.
Secondly, the author complains that:
> More broadly, the European Commission continues to be a bit too cavalier about denying companies — well, Google, mostly — the right to monetize the products they spend billions of dollars at significant risk to develop.
There's a huge rift in how most Europeans and Americans see the role of regulators but without getting into that, I want to note Android was not Google's effort alone and hardly a significant risk. Android as a software stack is built on the back of the Linux Kernel and a dozen other open source frameworks (Java, sqlite etc). Equally, Google is hardly responsible for the hardware. Manufacturer's like HTC and Samsung invested far more in making Google a success than Google did. The same manufacturers that Google has been screwing over with its anti competitive practices...