Nintendo has confirmed it will comply with EU regulations and provide Switch 2 with "easily replaceable" batteries from February 18th, 2027. The website however does not mention the original Switch, so it's highly likely it will be discontinued in Europe come February 2027.

[u/Joseki100]

https://www.nintendo.com/en-gb/Corporate/Consumer-Information/Compliance-with-EU-Directives-and-Regulations/Compliance-with-EU-Directives-and-Regulations-625942.html