Asif, if you mean some designer take that advantage of that and blame it on the requirements, why are you bothered with those designers. Its not like they are lowering the standard of the world!
In an ideal world, designer and only a designer choose what or how the design should be. But in this world, everybody is a designer including most of the clients. There is a pitfall for designer to fall into the ego loop. I think as a smart designer we should learn to cope with that. I can go on if these don't make sense.