This is a general comment, not aimed at this (or any other picture) and they apply to myself as much as anyone.
To me - personally - photography isn't about the technique, production or processing of the image, its about the end product - its about the picture itself. i care about what the picture looks like and what effect it has on me.
Only then, if I'm interested, I ask questions about how it was created and what techniques were used.
Whether that end product is straight out the camera, filtered or otherwise, whether it has been lightly tweaked, or whether it has been heavily manipulated, whether you have demonstrated the best technique on the planet, no matter how innovative you have been, it doesn't actually matter if the end product - the picture itself - fails.
Are failures really failures? Well that depends on whether you applied a technique, understood the limitations, took on board feedback if you requested it (or appraised it dispassionately and objectively yourself if you are able to (and most people cannot objectively analyse their own work - and I include being hyper critical in this!)) Most importantly you need to have LEARNED from it, and applied the lessons in future. These are simply stepping stones to producing better pictures.
The failures may be in technique, composition, lighting, technical, processing, or even in judging your market / audience. The best technique, exposure, composition and minimally processed image might be let down by something simple and completely outside your control (given the times you are available to take photos) like the lighting - it doesn't actually matter if every other element is perfect, the final product still fails. In fact it may be a fantastic picture that people just don't want to buy in to! Illusion and Impression matter as much - if not more than - technical perfection.
Another failure might be lack of honesty - with yourself, or with others as to your production and technique (Wildlife Photographer of the Year 2010 anyone? Its still a good image, if only he had been honest). Just remember though that EVERY image is manipulated. Is there really a difference between waving a filter pouch over the top of an image and using a filter? How about applying a grad in photoshop? How about composite / HDR image? they are all perfectly valid tools, and can all have the same or similar end result, so really, what is the difference? Just be honest about it, and everyone (yourself included) can assess for themselves!
Some people post what they would class as finished products / pictures. Others knowingly post stepping stones to get feedback as part of their learning process - be it on technique, composition, post processing, etc. Others may unknowingly post stepping stones thinking that they are finished products. I tend to find its how the poster reacts to the feedback that indicates where they are in their journey.
Does it matter if anyone else other than you likes your picture? Not really - Assuming the picture is just for you! However if the picture is for general consumption or is there to challenge / shock, then of course it matters - even if you say it doesn't, because its not getting the reaction you wanted / hoped for. Not everyone will like your picture! Thats life. They may have genuine worthwhile feedback, or they may simply just dislike your style / manner / reaction to comment or feedback / name. Its up to you to decide whether that feedback is valid, whether to listen to it and apply it, or whether you are quite content, can answer the comment / critisism (valid or otherwise), or whether you just want to be beligerant / militant about your work!
So where are you in your journey? Are you expressing yourself and your intentions well and reacting fairly? Are you being honest and fair with yourself and with others? Are you posting stepping stones or finished images? Is the comment / criticism valid and constructive, even if you disagree? Are you willing to listen, apply and learn?
Or are you so confident and full of self belief in your pictures that you are convinced they are perfect, and any comment / criticism are just plain wrong?