Bro TenZ plays Jett every map cause the team wants him to. You think Shahz is like "Tyson I want you to play Raze on this map so start practicing" and TenZ goes "fuck you im playing Jett every map"? No.
Shahz does spend a lot of his time streaming which wouldn't have been as big of a problem of they actually had a coach and supporting staff. He can't be that all in all for the team anymore if they actually want to win tournaments.
Their comps and strats are outdated and their utility usage is underwhelming. You can't expect problems like that to fix itself. They gotta put in work. And I don't think they do. Its so obvious from watching their games especially against V1 and The Guard that they have little to no prep.