Yes, they are saying that. By saying it publicly, they are overturning the decisions and principles laid out on the behavior of cardinals for the last 1000 years. This seems to me like the opposite of fidelity. 

According to you, they have an obligation to study more deeply when a teaching appears to be "notright." What happened to that obligation?

I am more interested on the personal level, how you can propose that obligation, and support people who ignore it. I know of a few teachings I think are notright, and I'd love to understand how to avoid an obligation to study the more deeply.