What's the current state to download widevine protected VOD right now? Is there anything I can use to bypass this? I remember in the past there's some key guesser extension but does not works anymore. Unless there's a new master key being leaked.
Bypassing L1 encryption (highest level) is a well guarded "secret" and almost impossible to bypass, since the license keys are exchanged with approved hardware, and not software decoded like that extension you're talking about used to do. L3 usually have the low quality options of streams.
RedFox anystream I'm pretty sure is for L3 (anyone can correct me if I'm wrong), It's not free, and personally have not tested it so I can't vouch for how well it works, but I'm pretty sure you won't get 1080p (even though it says so, that's usually behind L1) or 4K from this. However you can give it a try with the free 21-day trial version limited to 10 downloads, and see if that's something you would be willing to pay for.
Given that a lot of torrents seems to have shows with 1080p or 4k dumped from streaming services, does this mean there are private breaks of L1 that people are not publishing (so it cannot be easily patched)?