Is this repository still active?

[DaEun2Lee]

Hello,
I am looking to set up an SFU using media-server and have a few inquiries.

Unlike 'media-server-node', it appears that this repository has not been updated for over 18 months. Is it still active?
Is it appropriate to execute this repository to establish the SFU? Is it accurate that the SFU repository utilizes files from both 'media-server-node' and 'media-server'? (This is a question asking whether this repository represents an example of media-server-node's SFU version.)
I've noticed that the MCU version appears to be implemented using CPP files from media-server, whereas the SFU version seems to utilize js files. Could you kindly clarify the rationale behind this implementation choice?

Thank you for taking the time to read through this somewhat lengthy inquiry.