Indeed, and additonally the size of each subnet does not change in terms of nodes. Despite what some have claimed, anyone is allowed to raise a Subnet Membership proposals. Nodes go offline or degraded all the time within subnets and need replacing. A bad actor in the future could respond proactively to these incidents and progressively move more and more of their nodes (belonging to apparently separate NPs) into a specific subnet they’d like to attack.
Yeah, I think the community should try to use the focus that this situation has garnered to come up with a better system (and/or better checks and balances).