It probably gets 95% of the calls right. FIFA says 99.3% but I don’t think so. Still, if it didn’t exist everyone would be crying to implement technology like they did before. Think of all the goals/no goals that have been rightfully overturned. Even if there are some horrible calls sometimes, the good calls outweigh the bad ones.
Honestly? We used to have ‘can you see daylight’ as the rule and it worked a lot better.
But to answer your utterly dismissive statement it’s actually very simple- people want to be entertained - goals are harder to score it’s why all the contenders for GOAT are forwards.
When you rule out a goal for a toe being offside - you are rewarding defenders for standing in a straight line - that is it no other skill or talent involved.
When you are allowing a goal to stand because a toe was onside - you could be rewarding a timed prun, an incredible pass, a brilliant shot or a fantastic team move. At the moment all of those things are being ruled out by a toe being offside fairly regularly and it’s a massive downer.
It isn’t exactly the same not even remotely