Am maybe wrong as I don't know too much about YT, but I had thought that each year videos sorta "reset" with views an you only got paid for the new views for the year, so if a 2022 video had 100k views then they would only pay for any new view from 2023, so if it went up to 101k views in 2023 then it's 1k you are being paid for an not 101k
Again maybe am wrong about it, but I seem to remember reading something that having a back catalogue wasn't as good as it was made out to be as payments are reduced