With the context presented so far (zero, for those keeping score at home), there's no reason to assume that the poster is dismissive of the project being discussed.
Why IS Mirth needed, when we can improve other languages? This is actually a perfect segue for proponents of Mirth to explain the niche the language occupies and it's pros and cons for users/engineers.
Thanks for making HN cancer, dang. Honestly, you're jumping up random asses on the internet that you'll never meet nor matter to is why the quality of discussion on HN has reached the trough it seems comfortably rested in. But hey. You posted the guidelines. You're a hero.