1. Mullvad is a superior VPN for multiple reasons, and is worth switching from another provider like Proton or Nord
-- i don't recommend nord, but i do also recommend proton vpn. if you only want a vpn, mullvad is where it's at.
2. Running Tor - for any viable usage - through a VPN is fine, because you’re really just evaluating whether your VPN provider or your ISP knows you’re using Tor, and while neither can see the activity, you’d rather a quality VPN service be aware of Tor usage than a “definitely captured” ISP like Verizon or Spectrum
-- basically yes. tor over vpn (tor through vpn). there is more to evaluate, but it is riskier to turn off your vpn, then connect to tor, forget to reenable then expose your ip or trust your isp over a respected no log vpn provider.
also, if you don't have a vpn enabled, surfing http (unsecured sites) on tor can be used to deanonymise you by a malicious tor exit node etc (same with clearnet). this was a rebuttal to the argument made in the video.
3. If you’re aiming to cover the lowest-hanging fruit, but aren’t ready (or feel it’s currently necessary) to make the full shift to a de-googled Graphene phone and TailsOS, then simply running an always-on VPN like Mullvad for benign web activity should gain a significant amount of privacy with minimal inconvenience.
yes i recommend using an always-on vpn as i outlined. it's a basic first step re: the post, and yes to grapheneos, but with qubesos with whonix for a daily driver os. tails is awesome for what it is but it is not a daily driver per se, it's more for one and done stuff (this depends on your threat model).
tl;dr: use tor over (through) vpn. keep your vpn always-on (except for banking and other sites/apps that don't play nicely with it...you can use splittunneling to bypass vpn traffic for those). also, fyi amethyst allows you to connect through a tor proxy via orbot.