Super Bowl LIX: Chiefs Vs Eagles

He didn't do it when everyone was healthy. He didn't do it in camp. He didn't do it in preseason. He didn't do it when he was OC in Minnesota. It's just not part of the scheme and it's a different philosophy. Some schemes don't run out of spread formations and some do. I like the ones that do.
Either way, bro schemes employed still depend on personnel. Who knows, he may very well have decided as you say to just not run it.