no, if a photo doesnt achieve its results, it is not just the photographers fault..
for example, if i look really bad in a picture, i can also blame the makeup artist for doing a bad makeup, or the hairstylist for a bad hairstyle, or the photographer for bad lighting, or the stylist for tasteless clothes, or myself for just looking bad that day or posing badly. sometimes, even the producer may be blamed for getting a team who has no good chemistry together for the shoot! also, it may be everyone's fault put together = bad foto.