Do you know what this smells like? Corruption and consulting companies with friends in the govt looking for ways to profit.
No it doesn't. It smells like Microsoft has a monopoly on office software, and city employees are not tech enthusiasts. Anyone who used Office at home or in another job is going to complain when they have to learn a new software (regardless of which is "better" - for the average person, different is bad)
Plus, every document they receive from outside is almost certainly formatted in Office, so if there isn't 100% compatibility, people will again complain.
Migrating an entire enterprise to FOSS software is not easy, and in government where leadership changes can be more regular, it's not shocking to see the pendulum swing back and forth.