Not cause a debate which can be done in tavern but Bernalillo was aware of the very few lpe200 folks out there then and now. So it has nothing to do with uniden/whistler firmware.
The main reason they went esk pro voice was it was un monitorable by all, then most and the gang issues existing back then and more so now to robbery, car jackings, home b&e, theft of packages etc. Albuquerque, Hobbs, couple other small entities it has gotten really bad last few years with issues.
Believe it or not, not every thugee is as stupid as most like to think, specially in organized type crime which occurs I'm some parts of NM. They knew and know this. It's possible they may (underline ten times) leave dispatch open for other agency purposes however it'll be moot when Rio Rancho switches and it can be patched anyway and could now on limited basis if they wanted with one end being clear but future systems solve that issue along with most respecting the other agencies security in place.
With SP utilizing 700mhz equipment there, the newer models were ordered which are stored away while utilizing phase 1 capable equipment which was already around.
They are the guinea pig for the state setup to come which interop won't be issue once fully complete. With regional dispatch centers popping up more in state and common interop used or inner agency interops not listed mobile to mobile which everyone has it isn't a issue per say or hasn't been. Regional dispatch centers have gotten pretty good in larger high volume entities around NM with sending out the call or information same time for multiple entities on different bands, setups. Once a true interop region system is in place it will make their job easier and easier for the users.
With first net being built out, and state infrastructure over the mdt systems offered lately it is hard to not be in the know in your region or area if part of it. You'll know when you see new laptops in the cars, and nice black shark fins on the roof. Typically the fins come first for smaller entities then once money is there the laptops and mou to costs for access to the state systems offered not just ncic.
All in all more crime and smarter criminals utilizing means to be a step ahead. There is no conspiracy with it. It's the unfortunate reality and solving issues which costs a entity more if left untouched.