Let's be real though, when people vote based on economics they aren't thinking to themselves "the current President has X GDP growth and the two predecessors had Y and Z GDP growth." They're thinking about what's happening right now.
And the discussion is about whether Biden will run again. That will likely be determined in 2023 because if he doesn't then you gotta have primaries. I'm not making any predictions here as I have no clue what will happen but if a discussion is already being had about will he run again, and we've yet to hit a recession, that isn't the best sign if one does come. (Edit: based on economic matrix)