Adding more people to the project is a fallacy that has been known for decades as Brooks's law, usually summed up as "nine women can't make a baby in one month".

It is possible that Larian has avoided, or tried to avoid, this pitfall. For example, it usually doesn't apply when you add people early on in the process. Another important aspect to consider is where they added these people to? QA, for example, is relatively easy to scale up with more people; working on their engine's core, not so much.

If anything that Swen said about the development process has any connection to reality, they should have been hiring DevOps engineers, so they would be able to automate more, and leave actual humans to do the creative stuff, be it engine redesign or dialogue's writing. Although I can imagine the horror in their eyes when they realise that, instead of using industry-standard tools, they have to deal with a smorgasbord of clunky inhouse-built crap. They have a single position on their Careers page that looks like a DevOps engineer, but it's just a single one, and I don't know how long it has been there.