Battery operated devices are all over the place, there are just more components that require a battery, even small sensors here and there may use one. The current trend is pushing for this kind of automation where more devices are practically necessary. Ebikes are a part of the deal. Besides they are the best micromobility vehicles so far.
China has released water with higher level of tritium on a regular basis before, from many of its reactors. Hypocrisy 100.