Absolutely, and it is irrational to refuse to buy hardware from Google (which, with Graphene, is under your control) when the alternative is to either run a Google OS on a third party phone (and give up control of the software), or Apple (equally bad), or some impractical and less secure alternative like a Linux phone incompatible with Android apps.

Agreed. I dislike most of Google's products, but their Pixels have secure hardware and are very open (compared to other modern smartphones). In short - a good product for people wanting to run free software on modern-ish smartphones. If a product is good, why not buy it?