If you're referring to an overall shape to the lapels in that they're not pressed flat as a whole, then that's probably just because it's a soft fabric like linen in which case it's fine becuase it's supposed to be a little sloppy casual like that.
What I suspect you're referring to is the 'dot's along the edges, which is called by many "pick-stitching". In the old days when things were made by hand you'd actually be able to see the handwork by a tailor/seamstress having sewn together the lapel, the two layers of fabric, the canvas in between and I'm not sure but maybe felt or another layer behind it, as a sign of the work and perhaps out of necessity becuase there was no other way to hide it. With modern machines, we can use much thinner threads and even techniques like invisible sewing where the thread is barely even visible above the top layer (or hell, just glue/fuse it together), but as a nod to the old ways, as a personal stylistic preference by the designer (company or commissioner) it's still seen in ready to wear (or made to measure) items and that's what we're looking at here. So it's a fun little detail that acknowledges the history (like functional cuffs made by machine), it adds something to look at, and distinguishes the lapel line from the rest of the garment instead of one visual color blob. It's not necessary to show it nowadays, just like how functional/surgeon cuffs were at one point functional but today they really aren't, and yet we still stick to the tradition of having them, even if they're not useful and what was a sign of handwork is now just machine made.