I’ll argue this happened as recently as last year as someone who adores Romo since it helps drive interest in film room, concepts, etc. in the average fan. Plus his energy is fantastic, has good timing in his lines, which isn’t common by most color guys. Also helps he’s a QB, they’re almost always my favorite commentators, be that Romo, Gannon, or Green. Less so Aikman in-booth since he tries to appeal to the LCD a ton.
If you notice teams that run more Air Rad-ish concepts or the over/under/floods of RPO concepts, Romo rarely recognizes them pre-snap simply because he didn’t run them. If the Chiefs/Pats game stays on CBS, compare and contrast how little he knows of KC’s offense compared to NE’s. Dude played under Parcells, who obviously has a playbook and history overlap with BB, after all.
Most teams haven’t moved fully forward with the less defined (beyond Perkins-Erhardt) NFL, and Romo usually gets those teams. But if he had to call an Arizona game this year? Wouldn’t be his finest hour for play breakdowns.