From the rulebookI have highlighted key wording from the rules you quote which support the conclusions of the answers already given.
"5 CLAIMED Produce Orders and/or Most Popular Vendor (MPV) Card will trigger the End Game" - page 7
"After the turn in which a player claims a FIFTH Produce Order card or MPV Card (any combination), each player gets one final turn." - page 8
Does this mean the game end triggered if for example I have 3 claimed produce orders and 2 claimed MPV cards?
Is the end game triggered only if I get a fifth Produce Order card or fifth MPV card?
...and given you a thumb for looking directly at the rules to try and find your own answer.