There are two things at play with offside. When the ball is first touched by the passer, and where the target player is at that precise moment.
The idea now is that technology is supposed to give us a more accurate measure of those moments. Trouble is, you still need a bunch of falable humans to decide what that moment is based on a video playback and where to draw the line.
If you truly wanted tech to run this you would have boot and ball sensors working with some kind of laser tracking device. This would give you an instant decision.
Bottom line for me is, the offside rule needs to be re-examined. There needs to be a margin of error that allows for some common sense to be applied to all this tech.
Like today. How can a hand over the line be offside, when the hands are not supposed to be part of the game (FOOTball)?
Seems we have a case of one man's precision is another man's error.