We use sheets at Odoo, but also our internal version of the Spreadsheer app.
It boils down to preference.
Zealots will preach their side.
The OP didn't really frame how this question came up. But using what all your co-workers use and staying in the same ecosystem has a lot of value, even without sensitive data involved. If the whole company uses Excel, no one wants to deal with the one person using Sheets, and vice versa.
Hey, OP here. Valid. It's a pre-seed, pre-revenue start-up going through the motions to get the company on the right footing ahead of seeking funding. We have a company Workspace domain, but one of our advisors is a grizzled old CFO and did not enjoy seeing one his formulas borked by a difference in how Excel and Sheets handles xlookup().