Cyberpunk 2077 is the poster child for this. That game was easily 7/10 even when it came out as a buggy mess. Now that it's had a few years of polish, it's much better than 7/10.
But the public perception was bad mostly because of unmet expectations. I don't know if I'd call them "unreasonable" a they were set by the devs themselves, but either way, the game was and is much better than a lot of people think.