It's not a title algorithm, it's a character limit.
There isn't a technical reason why titles have to be that short, memory isn't in that short supply despite the RAM shortages. A function, therefore an algorithm, is deciding to truncate the title for some reason.
no, as I indicated the full title is within the character limit, to test it I opened up a submit form and it did not say the title was too long.
Full title, "...than ever": 64 characters
Another title currently on the front page has 74 characters: "The Many Roots of Our Suffering: Reflections on Robert Trivers (1943–2026)"