LOL - you can not tell just by looking at them.. you need to disassemble and check the bearing itself
if it rotates smoothly with no binding, no slop, no crunchiness or notchy feeling then yeah, it is fine.
but if there is ANY slop, binding, or anything other than smooth movement it needs to be replaced.
As an example - the other half has a 2006 LL Bean Outback with around 180K that we just put new struts in... the top mounts "looked" fine, but once we had things apart it was VERY obvious the one was completely shot, there was a lot of slop in the bearing..