This reminds me of Microsoft having a strong incentive to make sure hardware manufacturers write their drivers correctly, because if a bad driver causes problem

This reminds me of Microsoft having a strong incentive to make sure hardware manufacturers write their drivers correctly, because if a bad driver causes problems the average user will blame Microsoft, as they don't know that MS don't write the drivers. In this situation Firefox are being blamed for correctly implementing the standard and preventing access to the site, when the blame should fall on the site owner for not setting the security up correctly.