That's debatable. Lotteries are supposed to be completely up to chance. If by your own ingenuity you exploit a weakness then you are tipping the scales in your favor, which is unfair to less clever players.
It's basically the tragedy of the commons; everyone has the same chance of winning, but only you know you can safely risk more and win more, lessening the winning of others.
It’s hard to be sympathetic to people that make bad decisions as a habit. For example, if it’s a 1/5,000,000 chance of winning and they still keep playing, that’s on them. The have very little sympathy for losing lottery players. If people choose to spend their money like that, that’s their business, but that doesn’t invite sympathy when it doesn’t work out. It isn’t like they are being defrauded or even cheated. They have access to the same rules of the game and they have access to math just like everyone else.
I agree, and indeed this is a good argument for prohibiting lotteries. They're a form of predatory gambling that relies largely upon irrationality, addiction, and desperation.
This is a feature, not a bug.
The bug was the fact that it was only two groups of people figured this out.
Nobody improperly took anything from anyone.
This really only shows how much the lottery is an innumeracy tax. There was nothing hiding the fact that you can safely risk more and win more -- everyone had full access to this knowledge -- it was published right at the place of purchase. It is not like it was some insider secret available to only to friends of some corrupt programmer or something. It took him only 3 minutes to figure it out. You or I could have done the same.
So, totally fair.