It bugs me also.

My thinking is that the part of Google that I think is bad is their advertising and algorithmic recommendation systems which are built on private data that I no longer wish to divulge.

The Pixel is made by a company that used to be called HTC before they were consumed by Alphabet. That company produced good hardware that was smartly designed and innovative. That legacy continues with the device that Google has sells as the Pixel.

There are a few things about the phone that Alphabet has tainted, such as the inability to use NFC payments because hardware running GrapheneOS isn't allowed into their secure hardware attestation chain. Not for any real technical reason, only because it allows Alphabet to disincentivize people away from a competitor by abusing their many monopoly powers.

GrapheneOS takes advantage of the excellently designed HTC hardware to create an operating system that is designed from the ground up to be secure. It then leverages the complete control over your hardware to put Alphabet's other software inside of a little box where it constantly lies to the software in a way that lets your applications work without them actually being able to access everything on your device.

Yes, it is technically an Alphabet product and giving them money can feel distasteful. However, in this case by buying their hardware you can cut off their software, which is the actual thing that is negatively affecting everything.

I'd buy any other phone that fully supported GrapheneOS's requirements for future devices.

Until then, I'm less worried about giving HTC money than I am about having a device that I know is under my control and that works to protect my privacy.

Buy refurbished. GOS support will be coming to a (yet unnamed) OEM.