It's not a matter of believing, really.
Based on reference data sets we can merely conclude that the current set of maps has no direct impact on the popularity of Duels.
That doesn't mean you specifically (ex. Twitter, Reddit) think like that. It means the player base at large practically plays like the maps don't make a difference.
Twitter and Reddit represent less than 1% of our players. 99%+ of our players aren't represented here and generally aren't as vocal about the game they play. It's totally OK that you as individuals believe it's the maps fault and ultimately that's your personal opinion, I won't tell you what to like and what not to like. Statistically however, maps aren't causing this.
Opinions ≠ statistical facts