Yes I agree, but I have seen one prominent member of the #fediverse and proponent of #FOSS advise against starting a self-hosted single-user instance, and I have seen a few people on Reddit say the same in the various fediverse related subreddits.
It seems weird to me too, and I wondered if it was a common opinion among more established fediverse users. Obviously I don't think you share that opinion based on your helpful guides showing people how to start their own single-user instances.