Netflix and MAX do not use m3u8. Are you using the developer tools or some extension to search for m3u8? I am not updated but last time HBOMAX (now MAX) uses mpd. I forgot about Netflix.
Yes, it won't work with L3 keys. As far as I know, L1 is different, you cannot just extract it without hacking it.
I never heard of L2 too so no idea. And yeah, you need physical device for L1. In some cases, you don't actually need the device, but the keys to decrypt the video.
Disney, MAX, and other uses L1 for 1080p and up. Even if you managed to download a 1080p from Disney, you need L1 keys. If you have an android that has L1 cdm, you can extract it (don't know how). And L1 cdm gets blacklisted after few hours or days. You need another L1.
Streamfab is much easier to use for L3 content. Streamfab emulator can download 10 videos per day, and then use VPN or TMAC to bypass 10 downloads.
Be careful, some people will try to scam you selling you L1 cdm.
some tubi contents are not drm protected so you can easily download them with yt-dlp as already mentioned.. If you are using firefox there is a drm (drm protected) icon next to https.
Seems like they are using CGNAT, which means you won't be able to connect to some peers who are also not connectable due to both closed ports. One must open their port to establish connections.
They can surely remove you from CGNAT but for extra cost. I think paying for seedbox is much cheaper.
Do they do it just to feel superior about bring in a sekrit club?>
Yes.
Tho it takes time to join or never to their sekrit club. They look down on people who pick low quality or uses real debrid or DDLs. They will also ban you once they confirmed you are uploading to DDL sites.
there is also torbox and debrid-link fr