From your "Bridges tried to flee while on bail", it seems like both agents were caught and prosecuted. And, AFAIK, the claim was never made that they fabricated evidence. Heck, I don't know who disputes his guilt, just the appropriate sentence.
If a journalist or academic gets found to have knowingly fabricated even the smallest detail it immediately calls into question their entire body of work, and even colleagues they may have worked with.
These are federal agents and the best standard we can hold them to is "oh, we don't have direct evidence of other crimes so we'll just assume the first time we caught you was the first time you did it"
They sold him details of the case for bitcoin into their personal wallets. It wasn't part of a sting or intel operation. The same cops that built the case against him were themselves indicted for money laundering payments they received from Ross. Multiple independent agencies and field offices with rogue agents undermining the cases they were building in real time for personal gain that was contemporaneously worth less than a million dollars.
We don't allow it from cops (they're going to jail). In the case of these two cops, it's not clear what you want. From what I can tell, they weren't allowed to testify, and they gathered none of the evidence used to convict him. Instead, that evidence was to be used in another trial on different charges and the government dropped those charges because the cops were unreliable.