As opposed to the lights themselves, I think spiders are more attracted to a spot where they can successfully spin webs or otherwise catch their prey. See an awful lot of spiders and their webs in dark corners of porches and porticos, etc. And moths lose interest when a conventional outdoor light is turned off.

I don't light my gardens/landscape and I still share it with a host of insects, both seen and unseen. I'm of the mind it would be pretty much the same if the place were lit up.

From The Energy Circle which is probably the site you found..."Most insects are actually attracted to the ultraviolet rays (light with a wavelength of between 400 and 320 nanometers) emitted by conventional light sources. LEDs emit almost no light in this range."

I have a mixture of solar and electric out door lighting and it does attract tiny flying bugs and I have some very big toads that hang out by the lights for evening snacking--after beating their brains out on the lights the bugs drift down. They are huge toads and leave large 'toad poop' presents. These dry out pretty quickly so haven't been too much of a problem. The lights aren't bright enough to attract bigger bugs.

Water runs down hill and bugs are attracted to light.

Hi, we have the solar LED lights in our front area and I never see bugs flying around them like you do around a regular porch light. They aren't super bright, but they create a nice glow--in our case to light our circle drive (to keep cars on the drive rather than in my flowers).

What does "toad poop" look like?! I don't think I ever saw or would recognize it.

Toad poop is dark blackish green and shaped like a small slug--about 1 to 1 1/2" long depending on the size of the toad.