, I'm talking about the massive, entirety of the electronics industry, all of which is required to make an LED bulb:
Yes, that's what life cycle assessment (LCA) figures include. It doesn't take 8-20 kWh merely to assemble a LED bulb, that's the energy for everything included.
And that's actually a lot of energy for such a small item. Even incandescents are relatively energy intensive to make for such a small item (glassmaking is energy intensive), and LEDs are 8-13 times as energy intensive to make. Just (A) not 25x as many, and (B) orders of magnitude off of being relevant compared to usage consumption.
Remember that this "every person driving every car" also applies to the usage electricity, which is by far the vast majority of the impact. Generating an extra 1,23 megawatt hours to power 25000 hours of incandescent instead of LED lighting involves massive numbers of people "driving their cars and mining". 1,23 megawatt hours of generation just is not even remotely comparable to the resources that go into manufacturing a small electronic device. Which should be obvious from the price alone.
And pretending that incandescents are made of rainbows while LEDs are made by Satan is just not fair. Incandescent bulbs rely on tungsten. Tungsten is only 50% more common than silver. Extracting tungsten from wolframite or scheelite requires open-pit and/or underground mining, then pressure digestion in hot sodium hydroxide, liquid-liquid extraction with organic solvents, & acid precipitation. Since you're throwing away 20-25 incandescent bulbs for every LED, you're demanding 25 glass envelopes (glass smelting), 25 brass threaded bases (copper mining), and 25 tungsten filaments. The number of components is less but the volume of them is far more. As is the energy required to make them.
As for "waste": a large portion of the world's electricity comes from fossil fuels. 1,23 megawatt hours of electricity leads to a ton of pollution, including things like lead arsenic and mercury, being emitted directly into the environment. Far more than anything you might be concerned about within a LED bulb if you were to outright incinerate the thing in open air and dump all its waste straight into the water. Which is, of course, not what actually happens. And it should be mentioned that that RoHS marking on the bulbs? That requires strict requirements on the maximum amounts of toxic elements that can even exist in the product. We're talking milligram quantities of gallium, indium, phosphorus, etc. It is simply incomparable to the emissions from power generation.
Re, health claims, I can only guess you're talking about blue light impacts on circadian rhythms, and that early LED bulbs tended to be "cold" / "daylight" color spectra, wherein most incandescents are "warm" spectra? But today you can buy fluorescent to literally any spectrum you want, so it's not particularly relevant. Or maybe you're talking about flicker? Again, it was often bad with old bulbs, but completely irrelevant to modern bulbs. If you mean something else, you're going to have to state what you mean.