Mullvad looks like one of of the best VPN providers out there. However the use of a customised Linux Kernel and Ubuntu distribution gives pause for thought. Are

Mullvad looks like one of of the best VPN providers out there. However the use of a customised Linux Kernel and Ubuntu distribution gives pause for thought. Are they going to be able to integrate security patches quickly? Wouldn't it be better to use a standardised security focused OS?