Data oriented design is the new thing, much different from that.
OOP, other then smalltalk and maybe few other languages, is somewhat different in practice from the original idea. I can dig up a great talk from Alan Kay on OOP if you want. Actually i want to watch it again so i’l edit it in here when i find it.
That said, we often have to process seemingly unrelated data together which is slow with the model of passing data arround (even when by reference). When OOP was invented memory access was as fast as actual operations on it, while today memory is much slower then processing. With caches and simd and such, it is much faster if everything is an array. Peronally i’m not a fan of OOP because of the “everything has to be an object” mentality, but do whatever you like.