Think about it. We should be able to tell when he was replaced. Was it before Covid? When was the 1st time Trump said he wasn't the same person. The earliest I can find is Jun 2019. Which would make sense because they cheated in 2018. We can look at pictures & video broadcasts to help find dates.
Any one want to help here? Lets do some research.
Update: Looks like it happened right after Bush Sr Funeral in Dec 2018. There are articles about Biden going under plastic surgery at the beginning of 2019. All the photos don't look like him after the start of 2019.
The problem in tracking down what you propose, is that media use "stock" photos all the time, so a particular date does not necessarily correlate with a photo. I don't know the date of the photo used in this article, but 2019 is probably a close point in time when the "Biden switch" was made: https://www.lawyersgunsmoneyblog.com/2019/03/joe-biden-complete-non-starter-democratic-nomination
Virgin Liberals be talking about the party switch
Chad Conservatives be talking about the Biden switch
Yes, and EXIF data can be changed or removed from photos. It would be hard. Thats why I'm out sourcing it to GA.win.