Solo. It wasn't much of an option early on in my career but now as I went full Indy two years ago, I'm not going back. I think the recent advancement in Ai coding assistance really has changed the game what an individual can do. Just wrote about the topic recently.
Observation: If your blog post starts with a clearly AI-generated abstract, why would I be motivated to read the rest of it? It's unfortunately indistinguishable from AI slop.