The OEM are not greasable and therefore don't last as long as the greasable/adjustable ones. You will get movement in the ball/socket much earlier on the OEM and that leads to some instability. particularly on conering.
Its the same with the tie-rod ends, if you get greasable ones (and actually regularly lubricate them) they will last longer than standard sealed ones. I think the quoted 10 years is an under estimate for normal use I would expect to get much longer than a decade.
In terms of doing something, I would be getting under the car with a lever, something like a tyre-lever or pinch-bar and try to get movement between the top of the diff housing and the "A" frame. If the "A frame can be moved up and down around the ball, any more than about 2mm to 3mm you should probably replace it. It is most likely to let go when heavy cornering at highway speed when centrifugal G-forces are active. A failure at this point will likely result in a roll-over crash. Failure with severe articulation off-road, while a problem, is unlikely to lead to personal injury.