It's about as rude as telling someone their criticism is misplaced in that way. You've added more words to why you believe that, but that doesn't change the original sentiment.
You can say you don't want to support that usecase but someone inquired about whether you would. You said no, they're wrong to compare the two. Sounds a lot like "you're holding it wrong."
What I consider to be said is that they optimize for extendability ( not just one use-case) and that those 2000 lines do a lot of things.
Including replicating optimizations that are are not easy to achieve out of the box in their and other solutions. But they mostly found a way ;)