I feel advising a person to take a sick/injured animal to a vet is always good advice, regardless of any 'quick fixes' a person knows that could solve the problem. Most qualified vets would be hesitant to give advice over the phone unless he/she can examine the animal.
Some things can be easily fixed without a professional seeing the animal but in some situations, recommending a vet is the best bet. Especialy with symptoms that can be caused by different things. Injuries should be brough to a vet, especialy a limb amputation. Sure a bandage and topical antibiotic is good advice to hold off till a vet can be seen but such injuries can cause shock and other side effects that would need professional treatment. These things can't be fixed by an over the internet cure. Internal bleeding, shock, bloodloss etc..this requires immediate medical care.
I certainly won't hesitate to advise a vet check to anybody I feel should take their animal to the vet. If I feel I can advice something to do in the mean time, I will suggest that as well. A nipped toe or tail tip to me could be fine with some neosporin without a vet check, unless it gets worse (ie swellon, blacking of surrounding tissue etc), which I would still mention.
Thing is, I feel people should be well educated about their pets before they buy them. They should already know how to recognize basic problems and how to treat them, if possible, at home. Most of the problems people come here asking help for are problems that would not have happened if proper care was provided, the person didn't wait a week or month or whatever to decide there was a problem. Or would be aware of what to do if the dragon doesn't have a poo for a couple days, what sized crickets to feed it etc.
All the answers to the basic needs for any animal is available at our fingertips. It doens't take long to do a search on bearded dragons, anoles or whatever and read care sheets, etc from a couple different sites to get an ideal what general care an animal needs, their mannerisms, how big they get, if they like to be housed alone or with others of their kind etc. But every day the same basic questions get asked over and over again. Afterall these same people found this forum and that makes them only one step away in finding their answers, without waiting for somebody to answer their questions.
Not that i am discouraging people to post their questions here, I just want to encourage them to spend a few minutes and see if they can find the answer themselves, or at least gain more knowledge relating to their questions so they can indicate they tried all the basic things and need further help. I love seeing posts where a person says they want to get a dragon, have done tons of research, read a couple books, and bought what they need for the dragons' home and ask if they missed anything. Then, the buy the dragon 