Round table

and 80-90% of games are still played using the SM (Stronghold Map) style.

Firstly, this percentage has now dropped to around 60%.
Secondly, have you ever wondered why? When people create templates, they are often willing to play different maps (which is why template creation is popular now), but since preferences often don't match, and people often create templates that their opponent likes, the SM style becomes a compromise that often suits both players, but this doesn't mean that they actually like it.