Every situation is different. You might have come across someone's radar for whatever reason and your scam was uncovered, while someone else's scam might not have been noticed by that person.
This why I stated in OP -
Person B points out that the reason he is entitled with -ve trust is also owned up by others. Person A flat out denies to leave -ve trust to anyone else.If you feel that someone else is scamming but does not have a warning to others (negative trust) then you should open a scam accusation against them, and if your evidence is valid, and the conclusion is that they scammed then they will likely get a negative rating.
There was no scam accusation thread against Person B either.
If you feel that you were unjustly given a negative rating for whatever reason then you should first try to work it out with the person who gave you the negative rating privately and if that fails then you should open a thread in meta with your specific grievances, although you will need to document why you were not scamming.
The reason Person A calling out something a scam, is in fact dicey. According to person B - someone is not providing some proof does not make it a scam. According to person A, it is a scam. But, even when Person B is pointing out that others are not providing proof either, Person A is denying to leave them -ve feedback.
Sounds like the dadice discussion to me.
I am neither calling the activity in question as sane nor a scam as it is debatable.
Yes, but the answer is - again - depends. It depends on the details and you try to provide none in order to make this a general discussion. This is especially true because its as you say a "dicey" rating in the first place. It might very well boil down to a gut feeling.
If we e.g. take the "dadice does not provide a signed cold storrage address" issue and the negative feedback I left them for it. If the understanding of my feedback is that they are scamming because they dont provide a cold storrage address you got it wrong and there is no reason to neg rep others on this ground. The common example for this is PrimeDice. Dadice did not get a negative rating from me strictly because the did not sign a cold storrage address, but because of the way they handled the question why they did not. You also cant compare it do PrimeDice because PD does not target investors. I know this is an example and you dont want to discuss an example, but as you can see a rating is often more complex than the single sentence that represents it. I also dont want this thread to derail into that discussion again. So please understand it as an example that a rating that appears simple might not be.
My issue is the discripancy that some DT members are enjoying.
Towards eachother? That is to be expected and IMHO its one of the healthy aspects of the system. Different people do different ratings because they see things differently. The trust system provides you as the one using it do judge whether you want to engage with a user or not with a multitude of different opinions about said user (or not because they dont have any ratings). If there would be just a single opinion it would not be as helpful as several opinions are.
I repeat, it is not possible for any DT member to find out and negate all the scam. But, even after pointing out, why they are shying away ?
Point out what? How do you expect to get an answer if you dont say what you are refering to. This whole discussion is pointless if you keep an example in your head and want to just dictate how things are to be seen. No two cases are the same and pointing towards someone else who "does it also" is never a good argument in a defense. Its a pittyful attempt off a distraction. Even if we assume that there are two identical cases and one gets a negative rating while the other does not, the default trust list is no ones police force. If there is a thread in the proper section with proper evidence Im sure more than enough people will read about it and consider a rating. There is no need for A to do it all alone, if its such a clear case there should not be an issue. Whether or not there was such a thread for B does not matter either, some things come up and get noticed others need a thread.
That means they are not strong on their ground when the opponent is powerful.
Whatever thats supposed to mean.