If you watch the video, he actually calls it the “most complex chord progression in a hit song”. So he’s not talking technical difficulty for playing it, and he’s discounting percussion, rhythm, and time signature changes. It is just a very unusual/complex chord progression, and if you think that it is just a pop song you can play by ear without charting the song, you’re going to embarrass yourself.
I have watched over 60 of his videos and really enjoy his walking through the production artistry.