Exactly this! I questioned Laporte not engaging Viniscius, but after watching it again, in reality that should have been Fern & Dias' job. If Laporte had engaged, it would have left Zin on his own, as Rodri was trying to cover Dias too. If Walker was playing, I reckon he would've caught Viniscius in a foot race, especially without the ball.
Alas Fern got skinned, Viniscius set off like the Road Runner on fast forward & left everyone for dead. He still had to place the perfect ball past Ederson, so sometimes you've just gotta stand up & applaud a world class goal, from a very dangerous player... )(