No not been banned as of yet on both my 2ds consoles,
1 running cfw 11.4 B9S,
1 not running any cfw on 11.4,
i have used save file editor (PKHex) but have never played online.
i'll think i will just keep my wireless off for the time being though!
It's not the movies or games downloads that I would worry about, like breaking into networks, downloading encrypted things, spying on network traffic. I have seen so many "Top Secret" seals on files when I was a kid
I was obsessed with finding UFOs, a surprising amount of US files where stashed on computers in other countries, China back in the early 90s omg sooo much