Every year, Google spend more than $400+ millions dollars on Mozilla to remain the default search engine in Firefox.
Imagine if Google donate just $1 million to GrapheneOS every year. Graphene could hire more qualified devs, the improvements will be more significant. Look what Graphene already accomplished with little, imagine if we give them appropriate funds.
Google isn't waisting any money. The hardening of GrapheneOS benefits the stock OS and AOSP.
What is $1 million for a company who make more than $150 billion every year..