Your reaction seems to be based on a misunderstanding of MMORPG games and a set of incorrect expectations. When your expectations then clash into a totally different set of expectations, you feel hard done by.
MMOs are different from each other. There is no “MMOs used to be different”(in general) reality - at least not the way you mean it. What you really mean is “the types of MMO I recall playing in the past don’t support this sort of behavior, and in fact discourage it, and I expected the EVE MMO to be the same”.
EVE was literally designed and created to be harsh, unforgiving, cruel and violent. It was intended for players to be pirates, bandits, murderers, scammers and thieving scum. The original designers straight up said they liked the kind of player-killing and deviousness they saw in parts of Ultima Online and they wanted even more of it, but in a dystopian future space setting. (Note: harsh and unforgiving MMOs have always been out there, since before we even had graphics in games. You just weren’t playing those ones.)
EVE has a long and well-known history of being cutthroat and deadly. You may claim to be, or actually even have been, unaware that you were dipping into a game that’s meant to give players the option of being bad guys as well as good, and make ‘bad guy’ a viable long term career choice. What would Star Wars be without the Empire, without Mos Eisley being “a hive of villainy”?
You come across all judgmental about how anyone who does this must be a bad or broken person IRL. But roleplay is roleplay and not everyone wants to be the good guy all the time. What it actually shows is that you misunderstood the game you were getting into. When you encountered unexpected results, you failed to do the research that would possibly cure your misunderstanding. When people pointed out your error, you as an inexperienced and less-informed EVE player started arguing with veterans that your view of the game was right and their view of the game was wrong and broken.
This is basic “classic error” territory. EVE wasn’t made to suit your set of expectations. It was made to fill a different set of interests for a different playerbase than what you’re looking for (which is essentially a cooperative MMO with a dash of consensual PvP). Players can be ‘mean’ in EVE, it’s part of the game, and that’s OK. Rather than assume they’re just ‘bad people’, you have to adjust your gameplay to be able to deal with these situations.
(Edit: 30 seconds of Googling would have gotten you plenty of decent guides on how to reduce the chances of getting caught and killed while mining:
Google results: How to avoid getting ganked while mining
You made a lot of basic errors in EVE terms, from the way you dealt with the hunter to the way you posted your reactions and assumptions. It’s fine if EVE isn’t the game for you, there’s plenty of other games out there. But don’t confuse your lack of understanding with how EVE is meant to work with righteous justification.
This little graphic has stayed relevant for EVE since Day 1. You should consider what it means.