No it isn't.
You don't have to agree, I'm cool with that.
I've experienced it. I just have a different theory to yours. I fully agree that there is some scripting affecting it, and it feels like the scripting is compounded by each mistake you make reducing the team's 'confidence' as well as my own.
But to me there's no question that, when you're playing a game which is pretty smooth but still half a second or more behind, it affects your control input more significantly than it does for the other guy. Your mistakes come from the game not reacting to you moving the stick in time, from the player switching failing you as it does in these matches, even from fully charged manual passes turning into gentle taps because of a slight judder as you were charging the pass up. This clearly demonstrates that lag doesn't just act between the server and your screen, it acts between the server and your controller. Your control inputs aren't backed up and sent through again with a time stamp if there's a drop out.
There's definitely scripting, like I said. And, looked at with much broader brush strokes, it'll just seem like scripting and nothing more. But lag is not always equally felt by both sides, and the scripting combined with the way in which the netcode is built means the house of cards can all come crashing down for one side of it gets beyond a certain amount.
Ok agree to disagree . .we'll end up going around in circles.