If you can't see that these are totally unrelated, then I don't know what to say.
Fiber lines are completely different than "hey these rats that are constantly exposed to 5G radiation that's 20 yards away are acting all messed up".
Can you explain why it is fake? Non-ionizing radiation does have an effect on us. Just because it isn't melting our organs doesn't mean that we aren't effected negatively by it. The independent research shows this, doesn't it?
EDIT: regarding "who stands to gain"--consumers! It's very odd to me that I'd have to defend the technology upgrade treadmill on HN of all places. In October, Apple's going to come out with the A13 chip. Is anyone going to wonder "who benefits?" Or ask "why do we need it?" No, we'll all understand that the A12 is obsolete trash now. That's how this industry works.
I can't see 5G benefiting consumers at all. If you're on a 4G network, you already see no issues with streaming video.
Who is 5G even for? It's a solution seeking a problem.
You have to realize that "high" power radio & other artificial EM transmissions have been going on ever since you were born pretty much everywhere. AM Radio, FM Radio, "wireless" TV, and todays cellphones and wifi base stations. Not to mention all the other radio traffic that is more specialized, like airplanes, HAM radio, police & emergency services, the military, the light you see from your lightbulbs, the EM radiation that emits from your electric wires running through your house, street or nearby electric transformer stations on and on.
None of it has resulted in secret harm and 5G will be no different. The stuff that is harmful will have a lot of warnings around it and won't be secret. Such as UV exposure from the sun.