Jitsi Scaling for Webinar and upto 9000 attendees

Is Jitsi capable of scaling upto 9000 attendees and 10 to 20 presenters ?
I know this setup will require scaling of jvb for sure.
But what about jitsi-meet website, prosody and jicofo.
Apart from this it will also be recorded using jibri but I think that will be like just 1 additional participant, so shouldn’t be an issue I think.

That will not work to have so many users in a meeting. This is the case of having a live stream, having a conference with 10-20 people and livestream it where you can have millions of users on youtube.