I wouldn't say that he has extremely decreased vocally, but yes I do agree that he sounds different now. He still sounds good though, but different. I would agree with you and say poor technique is the issue as well as age, because he is getting a little bit older. Just like Koffi, his voice isn't the same like before because he's getting old now lol.

Edit: I do notice that he strains more, hopefully it can be fixed.

This song has been on repeat! Simeon Solo did his thing!

Me too, I have the song on repeat lol!