I doubt this is true. I doubt that the Nintendo (3)DS web browser would be sufficient to post on Twitter, even in 2019.
There was a whole mobile.twitter.com simplified interface for devices like that. Removed in 2020.
Plus this: https://www.nintendo.com/en-gb/Support/Nintendo-3DS-2DS/Usag...
> As of 25 October 2022, it is no longer possible to use Nintendo 3DS Image Share or Wii U Image Share to post images on Facebook and Twitter.
There was a whole mobile.twitter.com simplified interface for devices like that. Removed in 2020.
Plus this: https://www.nintendo.com/en-gb/Support/Nintendo-3DS-2DS/Usag...
> As of 25 October 2022, it is no longer possible to use Nintendo 3DS Image Share or Wii U Image Share to post images on Facebook and Twitter.