You bring up the founding fathers...I have a hard time rectifying the fact that the good guys/founding fathers were Masons and yet Washington D.C. has all of this occult symbology coded into it (a lot of which people now consider to be "evil.") Pierre L'Enfant was the one who laid out the basic design of the city in George Washington's day. Surely Washington had an eye on the design, so.....?

https://www.smithsonianmag.com/arts-culture/a-brief-history-of-pierre-lenfant-and-washington-dc-39487784/

If the DS did infiltrate the Masons, I wonder exactly when that occurred. There's such a dichotomy currently with regards to whether Freemasonry is a good thing or a bad thing. I've always basically been on the fence about this, as it's difficult to separate the wheat from the chaff on this issue. Both sides have some good arguments. I tend to believe that the lower ranks have no idea what's really going on in the upper echelons, as the rituals and symbols are never fully explained to the folks on the lower end, who are left to figure this out on their own. The truth may be that the symbols (intentionally?) have two meanings. As above (good), so below (evil).

At any rate, it's a subject with much to ponder about it.