I'm not arguing that this is an alien probe, but I don't think being disabled rules out the possibility of the flyby being intended. We don't know exactly how l

I'm not arguing that this is an alien probe, but I don't think being disabled rules out the possibility of the flyby being intended. We don't know exactly how long our probes will last, that depends on radiation and other factors. The trajectory could have been plotted to keep slingshotting around different stars long after the expected lifespan of the probe had elapsed, just in case it lasted longer than that.