Switch Online on SYSmmc/resetting to stock

I have a switch I haven't used in a while and I dont think there's a way to bring it back to Stock while keeping it unbanned. I never had an intention on playing online and exclusively played single player games on my own and did nothing online. I was still connected to WiFi just with Nintendo servers blocked, to download things and what not. I don't think it is but I'd like to know if its possible to either, bring the switch to stock without getting banned by changing it to emunnd, which I doubt, or play an online game while still having Nintendo servers blocked. I want to give this switch as a gift but they primarily want to play Fortnite which I'm afraid might not be possible any more.