He doesn’t speak “jumbled” just for the lols, he does it only sometimes, and only when saying important things.

It’s “Forever will it dominate your destiny” because that’s an important line.

Yoda isn’t some idiot who doesn’t know how to speak, he’s employing a feature of the English language where you put the object first to make your statement sound important. For example, “___ does not a ___ make”.

There’s a surprising amount of OT-lines that aren’t “jumbled” for this reason.

But then in the prequels, we have “Around the survivors, a perimeter create!” and “Not if anything to say about it, I have!” The only time it’s justified is “The shadow of greed, it is.” during his talk with Anakin in RotS.