If anything is cheap, it’s hitting two buttons to eliminate a full-health Hunter with no strikes, let alone an injured one with several.
Except for the hunters.
Ultimately, I do not believe the pounce is detracting from the gameplay. I agree that if your team has been annihilated, then a pounce coup de grace accomplishes two things: a quick end to a game earned by the Monster and a way for certain Monsters to stop trolling by stringing along poorly performing teams just for sadistic pleasure.
On the other hand, the pounce requires little skill and in rare circumstances can leave the match wanting. On balance however, the only people dissatisfied with the Monster’s pounce, or the Hunters fleeing to wait out the drop shop cavalry, are either too impatient or too incompetent to adjust - or dare I say - evolve to realtime gameplay strategies.