Google's current social media strategy for its hardware division mainly revolves around the @madebygoogle handle. Someone should tell that to the person who just tweeted from the @googlenexus account.
The @googlenexus account was rendered private for a short time or even intermittently since the tweet was published before it and its log of messages became publicly visible again. Oddly enough, the tweet has not been deleted. It was the first post since October 16, 2017.
With Apple's fall hardware launch event — the iPhone 13 series being in the lineup — done and dusted, Google may have seen fit to counterprogram the competition by promoting the to-be-announced Pixel 6 phones. Indeed, the Google Store site was also updated this morning with a new splash page.
I guess that's marketing.