That isn't anything new, you could find that (fathers/forefathers) on the net 20 years ago.
Sauce: me
If the sauce is no good for you, just take it as my opinion.
I was able to dig this up
https://lincolnfellowship.wildapricot.org/Kempthorne
He goes on to say “our fathers,” not our forefathers. Today we’re more accustomed to saying forefathers. Why didn’t he? Because Lincoln’s father was born during the Revolution. In fact, Lincoln’s father was eleven years old when George Washington took the oath of office. It is very conceivable that there were citizens of the time who had seen both George Washington and Abraham Lincoln, or at least lived during their terms in office. It demonstrates the short time frame between the creation of this nation and its Civil War. Abraham Lincoln was determined this nation would not dissolve under his watch.