That's the problem with games where the first bullet point to promote is bigger is better. No other shooter promotes bigger maps and bigger player counts like EA does with BF. When the key point is bigger is best, they got to force themselves to scale up everything even if they cant handle it.
Ya, I know COD has giant Warzone maps for BR mode, but their tried and true MP is still focused on classic 6 vs 6. Yes they got the adjustable 8 vs 8 or 10 vs 10 option, but most people still stick to classic map sizes and 12 people matches. I dont think the average size of these maps have changed in 10 years (they were definitely smaller in the COD4/WAW days).
I'm sure Activision could had forced COD over time to be mandatory 12 vs 12 or 16 vs 16 by now. But they havent.