https://www.brainyquote.com/quotes/mark_twain_103535#:~:text=%22It%20is%20better%20to%20keep%20your%20mouth%20closed,than%20to%20open%20it%20and%20remove%20all%20doubt.%22
It is better to keep your mouth closed and let people think you are a fool than to open it and remove all doubt.
So the argument is not “who said it”, but rather “who said it first”, “who said it exactly THAT way”, and “should we sue someone for plagiarism”.
Meanwhile, Latimer did not “invent” the light bulb; he didn’t have a patent for a “light bulb”, nor did he dream up the idea for a “light bulb”.
He came up with a great idea to improve filaments — an idea that apparently Biden was NOT impressed enough with to accurately portray it, or even know the guy’s name.