Reminds me of this thread about people getting tinnitus from using AirPods:
AirPods causing tinnitus?
discussions.apple.com
Quite a few cases and that isn't even listening on loud volumes. :-/
I think people are reading too much certainty into these numbers that are set about what dB something has to be to cause hearing damage. In reality it really depends on the individual and what state the ears are in – how much sound exposure has the ear been through recently; volume and duration? Are the ears fatigued or have a sensation of fullness to them? If that is the case the threshold for getting damage is reduced.
I really feel so sorry for this kid and what happened if true (I don't see any reason why it shouldn't be).
TL;DR
I have an intrusive tinnitus myself and some light hearing loss on my left ear since over a year now – the sound is horrible and life changing, so be careful with your ears!
Tinnitus (depending on how intrusive) and hearing damage is a horrible condition to have. I myself managed to get a new tinnitus about 13 months ago when I was listening to music during sleep to mask out my other (less intrusive) sounds I have. And I thought I was careful, having my iPhone next to me in bed at a volume far bellow what is considered harmful volumes.
But – that week before onset I was starting to feel that my ears felt full and fatigued, yet I kept listening to the same music (sweeping synth pad and piano) in a loop the whole night since I was so used to it (should have set a timer of course!). I also had a humming sound in my left ear that was new so I decided to tuck a piece of toilet paper in thinking it would rest my ear a bit since it was mostly the right ear I wanted to mask.
Worked fine for one night, but the next I wake up after two hours to my ears doing this two second ”warped chirp” that then faded a high pitched hiss/sizzle. Truly devastating and it has lowered the quality of life considerably for me. While not too loud in volume its pitch makes it feel like I have laser going through my ear and head.
So, take it easy – especially with in-ear headphones – and take listening breaks. Go to a quite place or room and ”listen” to the ears. If you feel they're full or fattigued and make any kind of unusual sound it’s time to take a listening break until these symptoms are gone (it is said 18 hours is a good time).
It is impossible to understand how horrible ear trouble such as tinnitus can be when you don’t have them.
Use your ears and enjoy music and sounds, but be aware! We cannot yet regrow damaged hair cells and synapses in the cochlea (fish and birds can naturally!) but there is a lot of research going on, so hopefully one day… Until then (and after too really) we should protect and be carful with the fantastic organ that the ear is (especially the inner ear) and what what good hearing means for the experience of being human.