The two device you posted cost $100 together and I need a set for each of my $35 raspberry?
Yes, it seems so if you have more than 1 TV.
I think that this is worst software regression I came across in my lifetime so far.
Uff, hold on und be aware, that this a open source project (like LibreElec) ! Support and development
is continued by volunteers at no cost. It would be more appropriate to make a donation to Hyperion NG or Libreelec and hope someone will sit down and develop this in their spare time.
What I don't quite understand is the hyperion function broken for every device that can run LibreELEC or is it only about the raspberries?
You can install Hyperion NG on a Raspberry Pi 4. Since LE 10 and 11 the graphic driver has been changed. In setup of Hyperion you can choose external grabber to grab the screen.