Explain the difference better, please?
Check out how Linus Tech Tips, MKBHD, or other tech reviewers end up reviewing tech products. They do not assign an end-score to the product because most tech is ever-changing with multiple revisions. Instead, they simply show what the product is, describe it in great detail including what you can and can't do with it, give their take on what's good and bad in it's current form, tell the company what they would like to see improved in the next iteration, and at the end leave the viewer with an open ended question of 'is this for you and will you buy it?' letting the audience themselves decide whether to buy it or not based on the given information.
We can and should do this with video games. We show the product, give a quick synopsis on what its story and systems are about and give a quick showcase on how the game plays day 1, including all flaws and positives featuring zero bias with a personal reviewer opinion near the end with what the reviewer would like to see from the product in the future. Not everyone has the humble ability to go back and edit a review after a game has been fixed for the better, so currently what you end up with is a game that could have came out to a bunch of negative reviews not fully reflecting the better product it turned out to be a year from then, including a wild amount of day 1 misinformation about the game when a casual viewer decides to look up a review. Case in point: Elder Scrolls Online.
The current way we review games is comparable to movies. Except for the recent movie Cats(which mainly patched the movie's CGI issues), I can't think of any movie that released that has been patched day 1, day 10, or day 100. Normally no one counts bonus footage versions and extended edition blu-rays because the amount if important narrative they provide to a finished movie is next to zero, as they only slightly affect the pacing of a movie by a few minutes. I don't see the Snyder cut ever happening for Justice League because it would go against everything movies currently stand for, which is what you see is what you get.
Giant bomb is one of the few websites currently on the right track with how video game reviews should be handled, and they are giving out less and less star reviews because of this, which is ultimately a good thing.