Can we realistically implement these in the near future? Will this not function as a stop-gap in the meantime while we do work on your (better) solution?

Yes they can be implemented, when there is necessity. The tech industry has been coasting on commercial surveillance to fund centralized solutions, relying on consumers not looking too hard behind the curtain. I'd say that overall fiction is what is really collapsing here.

I don't see how it's possible to answer whether this will "function". None of the simplistic actions stated in the press release address any of the actual threats - hence everyone is filling in their own imagined technical specifics. This is basically another "series of tubes" moment, with politicians not understanding that while they can control the physical wires, they cannot control the emergent complexity of communications happening over the wires.

Is it really another "series of tubes moment"? Is it not true that a system crucial to the majority of economic, social, and political(!) activity in this country ought not to be running on hardware/software known to be designed/manufactured by what has proven to be a "malign actor"?