As I mentioned a couple weeks ago now, not all aircraft in the sim are CFD-enabled. Surprisingly, this includes a number of stock sim airliners. Remember, CFD itself was not part of the core FS2020 sim at launch, and wasn’t even introduced until something like SU9 or thereabouts.
So not all aircraft are built and configured to actually compute their own aerodynamic forces using CFD in the sim. And if they’re not, there won’t be any wake turbulence.