Not being there so many years ago, as I imagine you weren’t either, we really don’t know what these Presidents said or didn’t say...with the exception of Reagan and Kennedy, possibly Coolidge. From what I have read, Washington was known to have a very expansive vocabulary...of choice words.
Additionally, you want to include Kennedy as a bastion of clean as driven snow?
No, I wasn’t around back then, but I do know times were different, and people didn’t openly swear and cuss to the public, when they made appearances. So, I highly doubt they when any of those men were talking to the public, that they would drop the F bomb. Get real.
Yes, Washington’s Farewell Address is full F bombs. Every other word, in fact.