Think I have something like 16k hours across all my PC games, with EU5 having the most at ~1.7k, I'll never understand how someone can have more than 10k in one game.
Some people are afraid of trying new things. And they also don't mind doing the exact same thing over and over.
So they play repetitive games like Call Of Duty, Rocket League, LoL, Dota, Counter Strike, ... where every match is the same gameplay. And they don't get bored, even after 10k hours.
If they were to play Terraria, they would be the ones mining the entire map as a "challenge"
PvP is inherently not repetitive due to the fact you will be interacting with many many different people over your gameplay sessions. And people are random, inconsistent, and weird.
Also, some people like honing a particular skill. It's not really about being afraid to try new things, but rather trying to be better at one thing.
My most played games like Terraria are well under 1K. Even this was before I become a parent and started working full-time.
These days if I put more than 50 hours into a game its considered a lot. I just finished the Oblivion Remastered and literally this was the only game I played for many weeks, with a playtime of ~45 hours.
Usually games as a service, they'll release a large patch or expansion that makes significant, unpopular, changes. So lots of long time fans will review bomb it, in a good way, to show their displeasure.
One does not even need to review bomb as a single update can easily ruin a game. After that it's no longer comparable to the game one was playing for possibly thousands of hours.
The thing about this meme is those people are either review bombing because "reasons", or they are all masochists, either way I would disregard them as spam and look for better reviews.
If they typed out an explanation like the game was massively changed for the worse after the vast majority of their game time then they are probably legit. Like if there was suddenly an additional 3rd party login added, or the game became unplayable due to a bug introduced and not fixed, or something along those lines.
Most "reasons" for players with thousands of hours tend to be pretty reasonable in my experience.
If a group of people are influenced by whatever, and suddenly write a bunch of negative reviews I would consider that a review bomb if they played 0 hours, or 10k hours. Adding the weird stipulation that it needs to be people that never played it is not a requirement I've ever heard. Now is it more likely that the trolls will be people who haven't played, absolutely, because the low cost (nothing) of doing so while the people that play games are actually gaming.
Review bombing is a coordinated online campaign where a large group of people post a deluge of negative reviews for a product, service, or business, often with the intent to harm its reputation or sales. This tactic is usually employed as a form of protest, coercion, or even just trolling, and is often seen in response to perceived issues with the product or its creators.