For me, I like the absolute items because, as a DM, you know what you're giving them, no more, no less, and because they were fun in 2E. So I don't really disagree with liking them. I just think that's a really odd example.
Elsewhere people mentioned that items boosting stuff other than strength were "just symmetry", and not found in myths/legends, and I don't think that's actually true. It's just that D&D's conception of strength matches up very well with the mythical conception, and the way the word is used, whereas all it's other stats don't really match up so precisely - agility and dexterity tend to be separate concepts (speed is often separate from both, too). You see plenty of mythical stuff that made people tougher, or prettier, or more attractive/beguiling (often this is treated in a negative way and associated with women, I think it's safe to say there's a strong element of a very gendered, very patriarchal society behind a lot of that), or even more wise. It's not always an item, of course (Odin gained wisdom from his quasi-crucifixion), but it easily could be. I do think D&D is kind of "missing a trick" by not having more rewards like Odin's crucifixion - you could have a sort of "one-use item" in the form of a magic tree or whatever (obviously, I wouldn't go that literal, but still). Early editions had the books of stat increasing, but they were a little dull. You could also make them raise a stat to a fixed point - maybe the Odintree grants you a fixed 18 WIS or whatever.