Interesting arguments either way, I've been away so not dipped in until now.
The force involved will not do itself any favours if it tries penny pinching this way - my force is coming to terms with cuts and the Diamond process is well under way with various suggestions made from all staff and several big cuts implemented, but none of them are safety related - estates is making some changes but stuff like this is secure.
3000 extinguishers is a lot but when you realise how ridiculously cheaply public authorities get fire equipment & services (they can get a brand new extinguisher for less than the cost of a refill to an off the street punter) it's not a saving, especially if they are correctly serviced for full lifespan - our force has just replaced a significant number, but only after 25 years service & even then they could have been extended serviced and retained.
Thin numbers, yes (if possible) but removal I don't think so - anyway the Federation & Unison Safety reps may have something to say about it as well as the press.
Besides - it's a police force, not an office. You have obligations towards Resilience for civil emergencies and the potential scale of disruption from a minor situation that could have been dealt with in seconds can affect service delivery.
I'm all for reducing unnecessary extinguishers & even in certain very specific situations would be OK with none, but this isn't one.
Although what is as bad as having no extinguishers is having dangerous ones - went around the Tower of London and the vast majority of their waters (9litre cartridge) had been condemned for 3 years plus with rust, lifted linings, damaged valves - dozens of extinguishers in total. A lot of CO2 were many years overdue hydro test as well... you would have thought with Royal Palaces fire history they would be tight on those things! The only stuff in good condition was the extinguishers in the Grenadier Guard's Barracks and Museum as they were NATO listed stainless steel units, which can go on forever.