View should not be responsible to post VMs events. That’s violation of encapsulation and will lead to a huge mess if VM is shared between several views.
Better approach would be to override withMutation() in VM:
internal func withMutation<Member, T>(
keyPath: KeyPath<Model, Member>,
_ mutation: () throws -> T
) rethrows -> T {
self.objectWillChange.send()
try _$observationRegistrar.withMutation(of: self, keyPath: keyPath, mutation)
}