No, I don't have a problem with the amazon exclusivity angle, either. And the only way they favoured it was by slotting it alongside songs that had a different streaming ratio - but clearly that's not of their making. I guess the manipulation is more clear because with exclusivity it favoured only ONE song.
I've seen a few Mariah fans complaining about her suffering last year and this year because other acts have been 'favoured' (Eliie this year, Ava Max last due to some video playlisting or somesuch), which is a bit rich, considering the fact that she is placed first or second on every playlist is such a huge part in her repeated success year after year.
In short I agree though - this is all due to the OCC.