Do you expect wizards to not boost their INT just in case they pick up an item that does the heavy lifting for them? Bards? Just how poor do they expect to be at their chosen role until they pick up the magufin that is going to save them all those stat point/feats? And if they are that bad at their job who is to say they are the one who will get it?
I wouldn't expect any of this.
This tangent started because the items in question reverted to 1e/2e versions of them (flat score) as opposed to the 3.x version (+x to your score)
(Notably, 4e did away with stat modifying items, and was probably better for it).
If the designers had opted to go with the latter version, the items would do exactly what one would expect them to do (and probably already seen them do in myth, folklore, etc.): enhance the person's stat significantly. Under this version, the str melee guy benefits most, which makes intuitive sense.*
*By that I mean, if you described the situation to people who never played D&D, but might be familiar with myth and such, it would make sense to them.
The designers went with the former for some reason, and so now, the barbarian is
least likely to benefits from strength enhancing gauntlets.
That's counter-intuitive. So it causes a kind gamble that the Captain was describing.