That's true.
Warning Opinions follow:
Nintendo's ban system is either not well optimized, or Nintendo is forcing a slow ban wave to spook people.
Think about it, Nintendo wants you to pay 20 for online so they don't want to ban you. They may just be putting out the fear tactics for now, and showing some of their cards to wake people up, without hitting people that may stop what they are doing and buy games/online.
That would also explain why we have only seen a few of every different use case. Nintendo could be saying, look we can detect all of this so stahp it or get banned.
I think that a banhammer is going to drop soon and ban all the people that were online with all these methods.. Nintendo is gathering the most information they can before doing that