Conversion of coercion is not a good thing and was never encouraged by the Church, at least not doctrinally. I am sure abuse happened and I realize that many Jews never converted in their hearts, and that presented a problem for everyone around.
My advice to everyone contemplating conversion to Catholicism, do not do it for extraneous reasons, even under great duress as it won't help your soul.
It is also true that the Catholic Church would make an exception during WWII and accept converts without asking questions, if that helped save lives. But this was done when emigration was not an option. I don't know if the similar consideration was made during the Reconquest of Spain, and what the position of the Holy Inquisition was when a conversion was confessed to be one of duress.
If you'd get off your high horse long enough to see, anybody who would believe you are a reliable source for that would be a RC anyhow.