"Explained Like You're 5 and don't care about the way things actually work". Read about Scalable Video Codecs (H.264SVC, HEVC, VP9, AV1), SFU vs MCU architectu

"Explained Like You're 5 and don't care about the way things actually work". Read about Scalable Video Codecs (H.264SVC, HEVC, VP9, AV1), SFU vs MCU architectures and then try again. The real reason end-to-end encryption is hard with SFU-mediated multiparty is very different from what is being described.