This is a potentially interesting study but there is a key gap which is around the actual health risk.
The figures around safety mg/kg are to do with the rate the toxic materials leach out of an item, not the absolute concentration within the materials or artificial lab based maximum leach rates. The quoted 10 mg/kg is also not an actual limit:
10 mg/kg limit originally proposed by the European Chemicals Agency (ECHA).
The limit orignally proposed is not the same as the actual limit. As far as I can see it is 0.05mg/kg leach into food, 0.04mg/l for toys, and as far as I can see there are no other limits in place. They are essentially being restricted in food contacting materials and toys, and requiring clear labelleling in other uses: https://www.echa.europa.eu/hot-topics/bisphenols
What really matters is under what circumstances the "maximum concentrations of 351 mg/kg" were reached. If that is an artificial lab test with no relatability to real world situations then it's meaningless. If that rate of leach occurs at body temperature with a bit of moisture then it's very worrying. But even then the absolute amount of the bisphenols in the products also matters - for example it might be there amount mixed into the plastics in a ear bud is too small to actually be toxic to a human.
Without that information this feels like sensationalist reporting of the findings - the article is implying there is a health risk when there may be none, and they are also implying there is wrong doing or failure of the EU enforcement of its regulations when there may be none.
It is worth reading the disclaimer at the end; while their aims may be laudable they are not conducting independent research and it's not clear their work is even peer reviewed. Instead this is a single issue lobbying group, part funded by EU funds, producing research with a political aim.
About ToxFree LIFE for All: The ToxFree LIFE for All project (LIFE22-GIE-HU-101114078) is an EU-funded initiative aimed at protecting citizens from hazardous chemical exposure through awareness, testing, and policy advocacy. Partners include VKI (Austria), Arnika (Czechia), dTest (Czechia), TVE (Hungary), and ZPS (Slovenia).
Funded by the EU Life Programme (LIFE22-GIE-HU-ToxFree LIFE for All, 101114078) and the Ministry of Environment of the Czech Republic. Views and opinions expressed are, however, those of the author(s) only and do not necessarily reflect those of the European Union or other donors. Neither the European Union nor the granting authority can be held responsible for them.