As you must actively point out the what complexity you avoided, it’s much easier to sell your over-engineered solution.
People get lost in complicated terms or techno-babble, are swept up in a story of why something is future proofing while losing focus on the necessity of this. People cannot predict the future and requirements down the line is almost as equally difficult.
Since these solutions are more interesting, easier to sell and easier to show and tell, they will quickly overshadow simplicity. As a result the system will reward these engineers that might not have cultivated the skill of keeping things simple and might have created unwarranted complexity.