I just picked up the more restrictive license at the beginning - being a sole funder and not working on this full time etc. I simply did not want somebody (e.g. a big company with a big team) grabbing my code along the way and running away with it.
Since now Titanoboa got to the shape I envisioned it to be in I am starting to focus more on adoption, so yes I am definitely thinking about switching to less restrictive license since it will probably help.
Also at the beginning I was not aware how badly AGPL is perceived (I always thought if it was good for Mongo it could work for me, but I may have been wrong).