Alternatives to google pixels have been explored since the inception of the project. The only difference now is that an alternative is about to exist where one hasnt before. GrapheneOS was interested in paying an ODM directly before Motorola reached out. GrapheneOS has never been pixel-only for any other reason than limited options.
GrapheneOS has never suppressed criticism or brigaded on social media. What is often described as "criticism" is a thinly veiled excuse to attack the project. Real criticism has always been appreciated.