Point 2. This is their solution Semi-automated offside technology to be used at FIFA World Cup 2022™The thing is it is easy to fix:
1) Is all about the feet. Feet onside = player onside
2) Rail camera on sideline keeping level with defence so view is always side on, not at an angle.
3) If you need more than 30 secs to decide then it's close enough to give the attacker the benefit of doubt.
4) Mic up the officials. Have a live feed all match.
5) Match reports get published on website unedited after the game.
But they have this in the CL