Large territories are harder to count (especially when in tight time limits like byoyomi.) Large territories with fixed shape may be less likely to happen
early in the games of stronger players, because one player or another would simply refuse to fix the shape if they were behind, and they are more likely to know if they are behind by even a little than a weaker player would be.
I remember that Myungwan Kim 8p once said in a lecture that Korean pros will often try to start a fight in the opening if they think they are even 1-2 points behind. That's at the extreme end of strength, but it gives you an example.
Large territories may be fixed somewhat later in the game, as you may see in games of Takemiya, though. Each game is different, though, so I'm not sure one can make a general rule or consider it a piece of advice to favor games with more, smaller territories. The only thing that can be said is that it's good to favor positions you are winning.
