He's progressed into a legit top 6 complimentary winger. His details are so much better, he's moving his feet, and his patience and poise with the puck have improved a bunch. The patience part is key, as he doesn't have the processor to play "fast hockey" at precise levels, and tends to panic when he thinks he has to make a quick play.
But when he's able to take his time and lets things develop, he can make plays. Having a guy like Panarin has helped a ton, as he demands a lot of attention from the opposition, giving Lafreniere that much more time and space.