I really wanted to have a rating system on Nintendo eshop not exactly to see games scores, but mostly because I personally like to give scores 

It can be nice to see what community thinks about a game too, It could help indie games to stand out as they can't chart on top sellers with discounts anymore 

Of course you would need to first buy it before giving scores to avoid haters creating fake accounts only to manipulate the number of stars 

I always loved labelling stuff like Wii Sports and YouTube "for hardcore gamers."

Not really.

But I miss the 5 star rating system on Netflix. Thumbs up and Thumbs down lets crap content off too easy.

I always found the ratings funny for a good laugh, especially the hardcore vs casual thing. Apart from those good chuckles I rarely paid any mind to it.

As for your idea about sharing what a community thinks in order to help indie games, that would be a good idea.

Absolutely. User comments, reviews and ratings should be standard on all digital platforms, even console ones.

As far as I know there was a rating system in the Nintendo Switch eshop for the first few days, but it was removed quickly because of the bad rating of the launch title "Vroom in the Night Sky", which is indeed a very bad game.

I don't miss a rating system. I make my buy decisions mainly through gameplay videos. Many of my favourite games have a bad or mediocre rating, I don't care. And on the other hand there are many overrated games out there imo. Maybe I care about other things than mainstream people do.

Indifferent.
Scores tell me nothing about the game, and these days review score have to do more with Spartacusing than anything resembling a good faith scoring of the game. Even if scores were honest, they still don’t tell me much about the game or the types of users who play them.
What might begin to be a useful system would be a rating system that matches user preference profiles with scores of other users with similar preference profiles preferences to likeminded players would be useful. And when I say profiling, I don’t mean “RPG fan, therefore use the RPG fan profile. I mean something related to the individual games I actually play, and how they match up with the scores of the average of the 1000 players who are closest to how I score games.

I don’t care really; why would I want or need this? Yet simultaneously if it’s there you can’t really complain either. It’s a big whatever.

Yeah. Despite the flaws of the system, it's still nice to have.

Vroom in the Night Sky got dumped onto the Switch eShop in April 2017.  I'm not sure if the Switch at launch had a 5 star rating system like the Wii U & 3DS had, because I couldn't find any mention of it.  But, there was a review system that was implemented for a few days and then quickly removed from the Switch's eShop in February 2018.

https://www.techspot.com/news/73493-nintendo-confuses-fans-removing-eshop-reviewing-system-after.html