According to Wikipedia, the last "stable release" was in 2012. Which may also contribute to things
The older Netfront predates Webkit, it was available for the Dreamcast.
Nintendo really has bad luck with picking their browser vendors…
The PS Vita (and PS4, but I may be wrong) were also hacked by a chain of exploits that started with, you guessed it, simple WebKit exploits.
For the ESLers out there, the verb here should be do instead of does.
[1] https://github.com/LiveOverflow/lo_nintendoswitch/blob/maste...