But in practice, I bet Israel would love it if a lot of people did that. The more Jews who are Israeli citizens, the better, since they can always come back. Someone who made aliyah only briefly is still much likely to stay forever, or to come back permanently one day, than someone who never did. For example, they know there’s a good chance that while you’re there, you’ll fall in love with an Israeli, get a good job offer, or get swept up in Israeli patriotism or whatever, and end up staying despite your initial plans.
Also, if you have an open mind, and think that you might stay in Israel long term, or might not, depending on how things go, then I wouldn’t see making aliyah as wrong or dishonest in the slightest (even if it’s motivated to a large extent by the lower tuition). Lots of olim come back. That’s normal nowadays, and a lot of them probably knew that if they couldn’t find a job or had other troubles they would end up going back.
This.
The same reason Key Food doesn’t mind if you come in just to buy the 99 cent ice cream. Because 9/10 people who do will also end up buying something else.