Dedicated CFOs and accounting types are simply doing their job. Their singular focus is often the bottom line and the company's financial health. It's not their job to maintain, foster, or enhance company culture. That is the job of the CEO.
In situations like this, it's the CEO's responsibility to make statements like "there are intangible benefits to free snacks and sodas. Small things like that help people that make money for the company stay focused longer and help them get through their day."
Help the accountants understand where the cost cutting boundaries are early, so you don't have to micromanage every decision they make later on. Over time they'll start to "get it" with your culture and they'll focus their attention on real problems like getting financing, making sure invoices are paid, setting up M&A deals, etc that they were hired to do.