steam is trying to boost every single games store % again

MERDE!

Hasn't this already been a thing? Steam implemented a key icon in 2016 to indicate reviews that did not count toward the review score. The star just seems to be a change in how they present this fact.

Steam News page for the 2016 implementation

As a result of this, we are making some changes to how review scores are calculated. As of today, the recent and overall review scores we show at the top of a product page will no longer include reviews written by customers that activated the game through a Steam product key.

Customers that received the game from a source outside of Steam (e.g. via a giveaway site, purchased from another digital or retail store, or received for testing purposes from the developer) will still be able to write a review of the game on Steam to share their experience. These reviews will still be visible on the store page, but they will no longer contribute to the score.