If the actual leap seconds do not benefit astronomers, and do not benefit anyone else, they are purely a tax on us all.
Abandon leap seconds in UTC, and literally everybody is better off. Even astronomers, who would go from managing 3 time systems to just two.
May as well dispense with the calendar entirely and just measure time in powers of ten.
An day is about 80 kiloseconds, and a year about 30 megaseconds.
Maybe many gigaseconds into the future our descendants will learn about old Earth time keeping in school, along with Roman numerals and the imperial system.
I hear the argument that we have to deal with this eventually to keep time in track with mean solar time, but the adjustments are so small that I don’t see any real impact on regular people.