I always did think it was odd that a USB-C cable that wasnt Nintendo could break my Switch.
I'm not saying that's the case for you, but USB-C is a minefield and I've seen some weird things happen with USB-C plugs.
That fried another device when I plugged it in.
This is non compliant in the EU, but when I reported it to the responsible authorities, they didn't feel like doing anything about it.
We are talking about a charger that can fry any device and potentially cause a fire, coming with a product aimed at people with babies, that's clearly non compliant to be sold in the EU, and they are doing nothing at all. Pretty shocking if you ask me.
One problem with EU regulation (or at least most regulations; a few have union-wide regulators) is that you're really quite dependent on whether your national responsible body is any good.
For something like this (assuming it's sold union-wide and not just in your country), it might actually be useful to notify the responsible bodies on _other countries_ (once it's actually investigated and recalled the recall should be union-wide).
I could put a USB-C connector on a device and have it not even try to do any USB protocol over the wire. If not being careful about pinouts, it could be super easy to destroy either device if plugged into some other USB-compliant device.