The man that wrote the lines “all men are created equal” in the Declaration of Independence was Thomas Jefferson. Over Jefferson’s life, he owned 700 slaves. During his life Jefferson freed 5 of those slaves. After his death 5 more of Jefferson’s slaves were freed in his will. Seven of those slaves manumitted by Jefferson were blood relatives of one Sally Hemings, herself a slave at Jefferson’s estate at Monticello.
What you say is probably true.
Now, does the United States come into being and defeat the British if Slavery is pushed hard at the inception of our nation? No.
Was it best to connect, then address the issue later? I believe so.
Was it good to put language in the Constitution so that men could read it and come to terms with that concept? Yes.
In roughly 70 years the issue would be confronted. The language that confronted it from day one in our nation’s existence was Jefferson’s.
The Founding Fathers agreed to that language. They went on record endorsing that viewpoint concerning all men.
In a real sense, these were men caught with their hand in the cookie jar, but willing to put forth the idea they were wrong to have it in there. At some point they thought slavery should be confronted.