Nobody is obligated to "advance development". Also many innovative ideas come from projects that are done without the expectation to get value out of it.
> it seems the author was rather serious about his language
You kind of have to be serious about something in order to invest many hours into creating and finishing it. It can still be fun.
> it seems the author was rather serious about his language
You kind of have to be serious about something in order to invest many hours into creating and finishing it. It can still be fun.