I think it would be naive to assume that there are not powerful, smart, actors that would love to change monero in a way that would cause it to have a chink in it's armor.
How do we know that consensus changes of this level are not exactly that?
We don't.
The only guarantee against that is setting the protocol in stone. Developpers control every blockchain protocols that is not set in stones. All the talk about "decentralization" and "community" is BS, developpers always have the power.
Only BSV follows the path of decentralization, ie. setting the protocol in stone.