It's more than 5 and TBH anything over a single nod is pathetic. "Paying Homage" just means to show your respects. For movie sequels, that's just a brief acknowledgement of the previous film(s) in the series.
It doesn't mean numerous instances of copying. That's beyond "Paying Homage".
If someone in your family died and a person payed their respects and said "Sorry for your loss" you'd say "Thank you" and keep it moving. But if that person said "Sorry for your loss" to you over 5 times over the course of 2 hours or so trust me, you'd get annoyed and think that person was a complete imbecile.