Essentially there are lots of people who both believe that Windows is the correct operating system and have no idea what they are doing. That's why rating firms run on Excel spreadsheets. Huge Excel spreadsheets nobody can maintain.
Plus there is another thing which is more important than security, it's the social structure. You usually cannot questions others decisions, even if you have actual proof that you are right. That's not acceptable in most companies.
The combination is also common. You have some idiots starting with VBA and having half maintained Excel spreadsheets which only grow, but never shrink. Converting them would be near impossible, so even if you are able to change the consensus, there's nothing people can do about.
Working in a company which is like that, I can tell that this is extremely frustrating.