FOSDEM has been around for more than 20 years:
https://fosdem.org/2023/about/
FOSDEM 2023 happened in February. The recorded talks and slides are available:
https://fosdem.org/2023/schedule/events/
Previous years recorded talks and slides are also available:
https://archive.fosdem.org/2022/schedule/events/
https://archive.fosdem.org/2021/schedule/events/
Nevertheless, it is good to have more FOSS conferences.
Since FOSDEM usually happens in Europe, having a conference in North America is good.
Best of luck to FOSSY. I hope they post recorded videos and slides of the talks so that those who cannot attend in person can also participate.