Political Memes

Israel apologized for the attack, saying that the USS Liberty had been attacked in error after being mistaken for an Egyptian ship.[5] Both the Israeli and U.S. governments conducted inquiries and issued reports that concluded the attack was a mistake due to Israeli confusion about the ship's identity.[6] Others, including survivors of the attack, have rejected these conclusions and maintain that the attack was deliberate.[7][8]

In May 1968, the Israeli government paid US$3.32 million (equivalent to US$28 million in 2022) to the U.S. government in compensation for the families of the 34 men killed in the attack. In March 1969, Israel paid a further $3.57 million ($28.5 million in 2022) to the men who had been wounded. In December 1980, it agreed to pay $6 million ($21.3 million in 2022) as the final settlement for material damage to the ship plus 13 years of interest

From your source.

It is misinformation to claim they faced no punishment. They accepted blame and paid retribution.

I'm not going to comment on if the compensation is appropriate to the crime.