I’ve yet to see one stop 100% of a close lightning strike, but I have seen it reduce damage a good 100x on the other side of it vs. before it. I see boxes with covers blown off full of black soot, vaporized copper wire, and charred circuit boards on the half upstream of a surge protector outside of a building, and then the half on the inside of the building that is guarded by the surge protector just has a few blown SMD compontnes on the circuit board which still fried the equipement inside as I tried to replace those parts and found the traces in the layers of the circuit boards got fried too.

So everything still got fried anyways, but the damage was suppressed a lot by the surge protector in-line of the ethernet. It stopped a fire from possibly starting in the building by stopping a lot of the blast inside of equipment.

I feel your pain on that,there are many rabbit holes about many different ones out in the wild.
Either gonna find a plug in power plug in cable plug in computer description, or every math formula in existance to describe how it sent one of ten trillion packets that one unique time to the billion different ways it can send them.