If the reason no one else deserves to play meaningful roles is because of Kopitar it doesnt make sense. His play this year hasnt warranted it and they had to tank because Kopitar couldnt get it done anymore.
If the reason no one else deserves to play meaningful roles is because of Danault then the signing means they dont think their draft picks are any good like I said before.
Lizotte doesnt get much prime time even when hes having a good game so hes not the reason.
The coach loves to play Kopitar, regardless of what he's doing. They tanked because the team quit in the 2018 training camp. And Danault was brought in to show the vets here that the team wants to compete. Not just Doughty and Kopitar, but also the Iafallo/Kempe/Petersen types. They don't want to waste years either.
Like I said, Byfield could be playing a lot more. He could be getting 1C minutes if the coach put him out there. Kopitar, with reduced minutes on a 2nd line, but still in offensive situations. Danault, perfect 3C. All of this is the coach's choice. Blake gave him options, and TM is leaning heavily on veterans. Same with Kaliyev. Moore doesn't have to be on the 2nd line. Those extra 2 minutes that Moore gets at ES could be going to Kaliyev, but the coach chooses not to do that. That doesn't mean upper management doesn't think Byfield or Kaliyev aren't any good. However, you also don't want upper management dictating what a coach does game to game. If you're going to have a head coach, he needs to have autonomy. You can disagree with what he's doing, and want someone that will do something different, but then you have to fire the coach. However, the Kings are currently in the playoff race, and coaches tend to not get fired when the team is at least somewhat successful.