Rodrygo and Vinicious are different situations. Rodrygo isn't considered in the team by Xabi for starting, he is considered as the best bench player, like to replace anyone, he can replace anyone at attacking side, so he can be bench for like 4 different players, so he will get ton of minutes without a shred of doubt, more than some starters even I am sure depending on injury and fatigue and what not.

However, Vinicious is still considered, he is still their star player, along with Mbappe. But the sad reality is, Mbappe is also a left winger normally, just because he plays awesome at striker, doesn't change the fact that he wants to play at left wing. If it was up to Mbappe, he would sell Vini, go back to left wing, and use the sale money from Vini to buy a striker.