This is the kind of stuff that some programmers dish out when they don't have anything else to say,I've seen some of the programmers state that to different people a lot of time,especially when someone enquire about the engine's progress with comments exactly like how the original poster does.It really sickens me when users of programs, who probably haven't programmed a chess game themselves, criticise the efforts of others.
It should not be taken seriously and I'd suggest that you go to amazon site for book reviews and take Da vinci code for example and read only the reviews of critics,There are critcs,there are always critics and critics are needed to judge the quality of the book and even someone who voted 4 out of 5 adds some critical points,and asking the critic if he has written a book is silly ,the same principle applies here.Asking a mechanical engineer if he has written a chess program looks silly and quite irritating to me
I agree with you,it's great because it's strong open source program,after Fruit and Toga,Glaurung and few others.Crafty is a great program