Tenz didnt play too bad. Don't let the stats fool you. He got 0 support from the team during executes.
Once he misses some shots it gets to his head, he loses confidence and starts making poor decisions. He whiffed a lot of shots that he hits when he is on his A game. I mean this guy does more aim train and DMs before he starts his stream compared to when he plays actual matches, Apparently he wakes up 5 minutes before the officials. Of course his aim is gonna feel off when you are changing sens so much start the round right away with a new sens.
My point is we didnt even get to see him have a chance at hitting any shots on Attack because he was just dying dashing into sites without any help. He was playing okay on defense when he didnt have to do the entrying. Your point still stands cause he shouldnt be doing all the settings changing anyways but at this point he is so used to doing it that it probably would be even worse for his mental if he stops.