First, it wouldn’t kill FEMA to say: “Those of you who are not averse to taking a test about technical topics should consider getting a ham radio license and one or more radios made for those bands, which are enormously capable of long-distance communication under adverse circumstances. The rest of you could consider obtaining some walkie-talkie-like CB or FRS radios, which require no license, and which can communicate over many tens of miles, which might well be enough to reach someone outside of the disaster area, noting that under a communcations emergency, any type of radio communication is superior to none whatsoever.”
Oh, and second, hams have generally been pretty compliant about doing what the government asks, like ceasing transmissions during wartime when advised off the air (last done in WW2). In any case, what hams would or would not do in an emergency is not up to FEMA to speculate about, and therefore decide not to mention AT ALL.