This is a little like game theory coordination vs cooperation actually. Coordination is if you can constrain all actors to change in the same way: competition is if each can change while holding the others fixed. “Evolutionary replicator dynamics” is a game theory algorithm that encompasses the latter.
Even if the beetles all currently share the same genes, any one beetle can have a mutation that competes with his/her peers in future generations. Therefore, reduced variation at the current time doesn’t cause the system to be stable, unless there’s some way to ensure that any change is passed to all beetles (like having a queen that does all the breeding).
What does Flutter do that various JS/CS frameworks don’t? Does it give design advantages on web, or is the benefit that it brings web design to non-web applications?