Does Microsoft trust Access?

I read this story about Microsoft’s team tracking driver issues with Vista, and one line jumped out and I screamed. The Microsoft manager proudly said they track all driver issues in a 4,000 row spreadsheet. That’s the worst possible way to keep a large amount of supposedly important data. Does Microsoft not trust their own personal database, Access? Do they trust SQL Server? A 4,000 row spreadsheet is aggressively stupid.