Boardgamegeek uses a minimum number of ratings to calculate the overall Top 100/200/300. Board games start with a weighted average rating of five and, thus, they can’t break the Top 100 with only a handful of ratings.
You still get the ‘early adopters rate everything 10’ phenomenon, but it has less of an impact and it requires a larger number of people to get excited about the new ‘hotness’. By the time a game has received a lot of ratings, it means a lot of people have bought and played it, which generally means it is - at least - quite good.
Personally, I find the ‘overrating of new releases’ to be a problem. I wouldn’t have a clue how to choose a recent Stern machine because there are only a couple of places anywhere nearby to play them ‘in the wild’, and I’m not comfortable paying $6-9k in the UK for something I haven’t played to death first. If I can’t trust the ratings systems not to be dominated by ‘the new hotness’ either, I’m pretty screwed at that point.
[NB: I am new to owning a physical pinball machine. We bought a Fish Tales during lockdown after we’d both played it to death on the Williams iOS app].