Yuzuru hasn't dropped the 4T for the 4S because of more points - it's very likely related to his injury. End of last season he had a Lisfranc fracture in his left foot, which was mostly caused by training the 4T. The injury was bad enough to nearly threaten to end his career (I think he said somewhere that going into WC2016 - or after the LP there - he thought it would be his last competition?). Even after it was clear he could continue to skate, there were talks about skipping this season. He basically had to relearn his jumps from singles, and a lot of program choreo had to be adjusted. Given that the 4T caused the injury, even if it is healed now, I'd think they're going back on the 4T to avoid this happening again. Hence, the 4S3T. Even if it's frustrating, I think he should very much stick to that. I'd rather have him do 2Ss than not skate at all.
(I'm not trying to lecture someone or anything, before that's the next remark thrown because I'm a Yuzu fan. I just wanted to explain what I think is the reasoning behind his layout)