To be crystal clear, we're talking about human evaluated trust here. You are stating you don't trust him to be the right person to sit on a board of a currency he developed and is spearheading.

If you want to establish reliable evaluations of trust in a human, you have to stay away from biases and blaming statements. Yes, Jed was a cofounder of Mt. Gox. Yes, Mt. Gox caught on fire and burned to the ground. However, to establish a logical connection between those two statements requires a truthfully evaluated statement regarding how Jed was responsible for the fire. To my knowledge, Mark was the one responsible for that fire, not Jed. Mark was responsible for the legal, fiscal, and operational health of that system. Not Jed. You have not pointed to a statement that causes this to evaluate the two statements together and provide correlation.

If you can't do that much, then it's just a blaming statement based an associative bias.

I've been in a bad situation before with co-founders and it didn't end well for anyone. I can't speak for what happened at Ripple with Jed, but the guy has a right to go out and work on what he believes in without being unfairly judged for taking actions that were well within his right of exercising in the past.