While getting an alignment the shop owner pointed out that i may have a rear suspension problem.
He pointed out the top bolts with the white paint and the fact that the driver side bolt was all the way down while the passanger side was all the way up.

(/\/\/\ not my car)
He mentioned that whoever did my alignment previosly might have moved them. The rear was within spec after my previos alignment.
Does what he said have any merit?
Are those adjustment points for the rear suspension?
If so, what do they adjust?