Mobile hotspot

Hi
I’m S20+ user and I would like to share an idea which disappeared in latest version of Android.
In older versions of android like 9&10 while using mobile hotspot, I used to control who can connect to my hotspot and who cannot by the mac address and the block list. Now I can’t control and I don’t why would the developers remove this feature since i’s very useful and helpful! we really need this feature on android 11 and I hope I get this to reach the developers.