Good a one star review with no comment or proof of anything is pointless. I'm glad they're trying to clean up the google reviews some.
Just to be clear on my stance: Fuck Tesla and Musk. I'm not a fan in general but getting rid of unhelpful reviews is good in my opinion, no offense intended.
Could just be that they're finally cracking down on brigading in general. It's not in Google's interest to have places be reviewed by people who haven't ever been there, so I could see them just automatically removing those.
I mean, Gigafactory Berlin (and Google itself) is trash, but it's not really in a review service's best interest to let users publish negative reviews for places the person has never been to.
There's probably some trigger that kicks in of x amount of people who aren't from the area write negative reviews about a specific place within a certain time frame that soft-locks reviews and says "this place is probably being brigaded."
This isn't even to get into whether or not controversies surrounding a building's construction are appropriate reasons for a review