It is not strange, Jehanne. What CAN they say in response to such non-Catholic insanity?
They are certainly in a pickle. I mean, is it right to "negotiate" with manifest heretics? Yes, I have been reading more on CMRI's website, but I promise to be polite about it.
While I have great concerns about the Society, we have to remember that, from the beginning, the Society has been very consistent in saying that they are NOT negotiating with the Vatican.
In fact, what they say they are doing is precisely what the Vatican has been doing with Protestant groups: discussing doctrinal issues and trying to find common ground. That Bishop Williamson has said that they have been unable to find any common ground, because, unlike the Vatican, the Society has not been willing to compromise on the faith so far, the doctrinal discussions are yielding no agreements and will likely end this spring.
I can see no downside to talking with people about the True Faith in the hopes of converting them. Even Saint Paul did so.
What doesn't make sense is saying that you're doing this to the person you hold to be your leader.