I agree that many are moving off of it, I just feel that it shouldn't have taken this long. Washington Co was also supposedly moving off of it.
I know a lot of this stems from the "old days" where everyone used similar frequencies because of mutual aid. For instance here near me St. Clair county, Monroe, and Clinton all used 154.190. Clinton has moved off but Monroe is still using it but with PL. The issue I have with that is these dispatch centers are paging on the same frequency, which causes reception issues, not just me but FF who rely on pagers.
Sorry for the rant just feel that when it comes to VHF frequency allotment a lot of FDs are just very stubborn. Seriously if you changed your tone outs from 154.430 to say anything else that isn't used near you, would it really be that big of a deal? The hardest or most expensive part would be reprogramming everything.
Multiple agencies using the same frequency for tone outs has been proven to be unsafe.
I also don't think a lot of FDs realize that it violates NFPA to use a "tone out" frequency for response/fireground.