Great news: all the session recordings are now posted for CF Dev Week 2021. This includes the 20 sessions (from community members and Adobe engineers) as well as the Adobe keynote.
The sessions are posted at the videos page here on the CF Portal, which also has most or all recordings from various (but now all) previous Devweeks and CF Summits. It also offers various Adobe webinar series, like the recent one on the API Manager.
The recordings play in a popup player offered on the site, and the videos are currently hosted on the Adobe TV site (video.tv.adobe.com). Perhaps in time they may be offered also at Youtube, as some past Adobe videos have been.
Anyway, go get informed and/or motivated by the many topics offered, whether on CF itself or integrating it with other things, and more. You can still (currently) find all the topic titles and descriptions at the CF devweek 2021 site.