That might be true for old Wireless Mice, where the Bluetooth protocol uses old security protocols, and do not work after updates that fix the enforcement of better security in the Bluetooth software stack. However, for $15 or so, I would rather replace any older mouse or keyboard, to ensure good security.
As regards bugs, Microsoft do not do this intentionally, but with hundreds of thousands of different hardware configurations and driver combinations (many items with unsigned drivers), it must be very hard, even for a large company like Microsoft, to get it 100% correct every time. If an issue occurs after any update, check the forums, and go to the manufacturers site for your device in error, and ensure you have the latest software and drivers. This is especially true for Graphics Cards.