I’ve just been out to check my Saris Bones bike rack as it uses nylon straps and god forbid steel buckles but thankfully absolutely no evidence of wear. I think I’ll take a punt on those lids for that price.
Steel or plastic shouldn’t really make any difference, both are harder than nylon.
From the photo’s I don’t see how anyone can say what happened… except that it’s not sweat but that doesn’t mean the straps didn’t get cut over time by a sharp edge to the clip…
I’ve no idea what the differences are between the same shell from Fox and the same shell from on-one or anyone else.. but assuming the helmet is the same shell I wouldn’t be at all surprised if the cheaper copies used cheaper plastic clips and that some might just have sharp edges from the moulding.
As a parallel….
I just picked up one of the SJ CAM’s from Amazon… at £30 the stuff that comes with it would cost more if it was genuine GoPro… but the plastic mouldings and such are of far inferior quality and QA. There is a cute little clip/stand with inserts for a tripod adapter top and bottom… the top one is a bit unusable as you then can’t get to the buttons and the bottom one hasn’t been threaded properly… but been inserted anyway. The actual part SDCAM make (the camera) is excellent for the price… however the screws don’t work as well, the non waterproof clip has an issue etc. otherwise its probably better than a GoProX (whatever old version that is) except the peripheral/extra bits
Of course the dodgy screws and missing thread are not protecting my head…
I’m sure if you bought 100 out of those you’d find similar QA issues in way more than official but 10x the price GoPro… so I wouldn’t be surprised to see the same with helmet “additions”….