And to that thingie you posted on fb, I would say you should not worry about it at all, as long as you are not directly working for any agency that will require that you deliver untouched photos to them. It is about artistic expression, if you are drawing, painting or taking pictures it is perfectly in your rights to edit a photograph how you see fit, and if someone would ever ask you for a untouched photo you always have the raw files you can go back to so in any case it is not a problem in the slightest. On the other hand it is great practice shooting straight up (If you shoot raw, just the basic retouching, 15-20 contrast, clarity 5-10, vibrance +10, saturation -4 and so forth), it will force you to select your moments much more carefully and the quality of light becomes a huge factor, but that being said you have taken so many images now and edited them in a style that has become your own, why should you give that up just cause one "pro" photographer told you to ? Keep on truckin´buddy.
What i like most in photography is that i am totally free to decide what i want to get in the end. Even though i am open to almost any suggestions i think i would stop doing photography rather than listening to this "pro" fellas advices ) However i agree it would help to push creativity, putting some physical limitations just for practicing
Yeah, freedom of expression, in a way it is kinda like saying you should only do street photography with a 50mm, even if you have other lenses, that is just building imaginary fences. Well there is a lot of pro photographers that edit photos waaaaaay more than you and I do, but the difference between those pros and the regular joe is that they make those heavy edits look good.
I would certainly not enjoy photographing if I was forced to keep the images untouched (shoot jpg), it is a big difference when want to shoot clean and for practice, then it is fun.