

You get a circular voltage gradient away from the strike spot. A human with their two legs doesn’t spread along that as far as a deer’s four legs do, so they catch more voltage drop across that, which also runs through their body (along their heart etc). It just depends a lot on how and where a body is affected by electricity.
Modern LED bulbs tend to overdrive the LEDs to a point where they last about as long as incandescent bulbs in my experience. It also allows them to use fewer LEDs, driving cost down. They could last so much longer…
I do like to buy high power ones (100W equivalent ones), open them, and lower the drive current by increasing the driver shunt’s resistance. I haven’t had a single one of those fail. (Don’t do this unless you’re a professional, mains power stuff can be fatal!)