Fortunately, your link basically says it doesn't apply to something you wear on your hands or arms:

> By way of derogation from paragraph 1, the following products incorporating portable batteries may be designed in such a way as to make the battery removable and replaceable only by independent professionals:

> (a) appliances specifically designed to operate primarily in an environment that is regularly subject to splashing water, water streams or water immersion, and that are intended to be washable or rinseable;

But the only mention of "medical" comes right after it, and doesn't include hearing aids, future smart glasses, etc.:

> (b) professional medical imaging and radiotherapy devices, as defined in Article 2, point (1), of Regulation (EU) 2017/745, and in vitro diagnostic medical devices, as defined in Article 2, point (2), of Regulation (EU) 2017/746.

So ironically, the law allows disposable "junk devices" people are complaining about here, but doesn't allow factory-only serviceable hearing aids. How 'bout that? We can buy our smart rings and throw them away, but hearing aids will have to remain giant hunks of heavy plastic, or at least the models purchasable by average people who can't fly out of the EU to buy the good ones.

Edit: It's easy to downvote. I cited the relevant law. If I'm wrong, cite other law that explains why.