So, ultimately this is a possible link between blue light and dangerous hormone imbalances? This article is pretty useless without the actual study text, but it sounds like fearmongering about the latest tech. I mean, such a link could very well exist, but we're missing some important questions. Is the effect limited to cool white sources, or do warm white lights like household A-type LED bulbs also have a measurable impact? And what about fluorescent tubes, which can have just as much of a blue spike as LEDs? Does CRI change the effect?
If I had to take some wild, uninformed guesses, I'd say that the problem, if it exists, would be worst with low-CRI cool white lights of any technology. That's streetlights (which are more concerned about efficiency than color), computer screens (which only need to have three colors), and fluorescent tubes. And I'd further guess that the effect is worst when the lights are bright, or when you're exposed to them while you should be sleeping. I'm astonished they didn't make the writing exclusively about cell phones.
Badbs101: You can still buy full cases of 48 bulbs on Amazon; I keep some around for dimmable lights. It might be a bit more expensive than a garage sale, but they're new and it's a lot less fuss to place an online order than the "scour" anything.
By buying high-CRI warm-white bulbs and putting them in diffusing fixtures or lamps with shades, I've always felt very cozy and happy with LED lighting in my house. Apart from those couple dimmable fixtures, my house is all-LED and I haven't had any problems with glare or sleep disruption. Same goes for streetlights, honestly, since I have curtains on my windows.