Cryptography based on limitations of computing power has to make the assumption that if the computing power required is even potentially within reach of any existing organization, or within orders of magnitude of being within reach, it's long past time to migrate away. It doesn't matter if the capability has in fact been developed; if it seems even remotely feasible, time to migrate to better crypto.

Moving to 2048 or 4096, or to ECC, thus seems like a prudent step whether you believe such intercept capabilities actually exist or not.