Imagine if people never tried anything new simply because they were starting from a disadvantage! In machine learning this would be called a "local maxima".

I can see where they are coming from.

The use of the words "I'm trying to imagine" is really very provocative, because it suggests that the commenter has thought hard about it comprehensively eliminated any possible reason one would use Ruby. Which in turn implies there is literally nothing good about Ruby at all.

So someone has poured heart and soul into building a free library in their own time, giving it away to everyone and the response is to casually dismiss it with a remark suggesting there is literally no reason for it to exist.

Is it a big deal? no. But it would be good if people tried to be kind when commenting.