You understand incorrectly.
Catholics may not be Masons.
It isn’t about “all the good work they do” or “all the great people I know who are Masons”.
It is about the fundamentals of the organization.
such as?
where did the history channel get it wrong? no atheism allowed, good moral character...etc.
I recall sitting in a Lutheran church (Missouri Synod) a man being excommunicated because he became a Mason. This was 40 years ago, I do not know if the LCMS, still abides by this rule.
If this is true it is not because of any thing the Masons believe. Masonic rules allow Catholics to participate!
Don’t the Catholics have the Knights Templar?