I'm sure they would welcome contributors! I wonder if the classic excuse for not open sourcing software applies here - that the developer is ashamed of their s

I'm sure they would welcome contributors! I wonder if the classic excuse for not open sourcing software applies here - that the developer is ashamed of their source, that they think it is messy and no one will like it, applies here? Either way, one shouldn't really overtly negatively criticize - it probably wouldn't encourage such a developer if they do have that thought.