And you feel qualified to judge them? You too are a sinner.
Yes, I'm a sinner. That doesn't mean that sins of other people didn't happen or are excusable.
And its not a matter of "feeling" - it's a matter of fact. It is a fact that some chose at this time to die rather than betray the church. It is also a fact that some chose to cut a deal to save themselves.
It is denigrating the sacrifice of the martyrs to excuse the traitorous acts of the betrayers.