KP are mainly needed for new players so it's obvious - everything was replaced with KP to get new players while old ones will leave.
-feeding effect -> KP
-majority of evo buildings -> +2 or +3 or +4 KP in form of item or normal KP
-main prizes - wishing well, ferris wheel, cart library, monument, trading outpost - deleted, gave KP instead.
-time boosters 4x8h in 84-86 cost chests changed to KP
-wishing wells -> produce tons of KP
Combined with portal profits its made for new players to catch up to old players quickly.
When i started 5% portal profit was a rarity and to have 10 at once was a big thing.
Now someone can jump from chapter 10 to 15 in less than 2 months which was seen on several servers.