Yeah this sort of thing matters if you're loading $300K worth of parts onto a big batch of boards, especially if some of the parts are expensive, but for building stuff yourself? I've never had any issues at all. I think if it were a $50+ IC I would be tempted to bake it as suggested if it had been opened, but LEDs? Who cares, just solder them on, on that miniscule chance that one popcorns just replace it.