Simply put, suchmoon was open and transparent with the reasoning behind why Gleb's account was "bought". Red tags are given to account sellers/buyers that have the purpose of trying to game the forums and/or bounties/campaigns here. Because that issue was addressed and full disclosure provided by suchmoon that the account won't be used for any of the purposes mentioned above, I personally find it to be trustworthy.
IF, however, the Gleb account is used for any other purpose than what suchmoon has stated, then yes, it should be tagged to death by DT members.
Red tags for account sales are at the discretion of the DT member tagging it, so in a nutshell, I agree with your statement that they only tag whomever they want. Because at the end of the day, it's their prerogative and not a requirement, especially because full disclosure was provided in why the account changed hands.
Suchmoon tried to "help" a good member but suchmoon didn't trust this good and trustworthy member enough to lend him the money, instead she tried to accept the account as a collateral, in a nutshell I'd call that account trading in disguise. the story of a goddess ends where suchmoon doubted Gleb and took the account, it means that suchmoon was afraid that Gleb could sell the account once more after getting the money, therefore Gleb was no longer a good member in the eyes of forum goddess "suchmoon".
Gleb has an alt account
"AGLD" which I got The Pharmacist successfully tag him by getting involved as a red tagged garbage poster(sting operation) but I have been extremely transparent and he caught me with my bluff, however a good forum member "bigmelons25" came forward with the evidence and now we have this case here because of that.
Please note that Gleb was trying to sell multiple accounts and as I have heard he is in this business for years, there is something fishy about this case, Gleb resets password and changes email multiple times and the account tries to apply for a signature campaign, even when he was in control of the account he lied multiple times and claimed that he has never tried to sell the account, he was in control of the account and was enrolled in a sig campaign while lying to our faces. suchmoon considered this person trustworthy and tried to help him out. suchmoon has tried to help a liar and account seller.
I am willing to forgive him at the age of 58, I am willing to provide a way out for him if only he tells us who bought the account and how many times he sold the account? he could keep busting scams with a newbie account if he really wants to help. did he only busted scams because of some green numbers and words on his profile?
Gleb is so naive that he thinks either theymos or some other high profile authority around these woods is going to exonerate him from all the crimes he has committed. @Gleb, what you have done is worse than killing a man according to some forum members.
I suspect that Quickseller is the person who included Gleb on DT2, if you pay a closer attention you'll see that some DT1 members are always present on topics where their DT2 members are involved but they always use alt accounts. note that DT1 members are not getting involved directly for some time now unless they are afraid to lose their positions. my guess is that theymos is trying to give them the benefit of the doubt far too many times and I would like to ask him please stop letting people to do more damage than this, when you see some evidence of shady activity from DT1 members, be a man and put a stop to their misuse of trust system. they all are linked to you, whatever they do people would blame it on you.