Yes for the GP but UBO on firefox isn't defaults either. The bulk of the benefits you get from mullvad browser past what you get with default firefox + the same extensions are easy config changes. Things you can accomplish by just scrolling through the settings and flipping on a few settings with "more secure more better" worded descriptions.
For the average user there's not really a particularly good reason to jump for a downstream browser unless you are specifically using their main features (tor or VPN). It's easy enough to get 95% of the way there with 30 seconds of config tweaks off stock upstream.
For the average user there's not really a particularly good reason to jump for a downstream browser unless you are specifically using their main features (tor or VPN). It's easy enough to get 95% of the way there with 30 seconds of config tweaks off stock upstream.