Key words "If done right"

Most people, when called upon to use silicone in an application like this, use waaaaaaay too much.

A "bead" of silicone does not mean a 1/4" diameter glob. It means a really thin stripe exactly where it is needed, which is at each sharp corner between each of the half-moons and the straight part of the gasket and a few millimeters (no more!) on each side.

Too much gasket will squeeze out inside the engine, then peel off and get into the oil pick-up screen or worse, get *through* the oil pick-up screen and clog the oil jet in the oil feed for the transmission, and that oil supply does NOT go through the oil filter on a good many bikes (i.e. every one I've worked on) so there's nothing stopping it until it gets to the restrictor jet, which it promptly clogs, eventually causing transmission failure from lack of lubrication to the bushings.

Seen it happen ... had to fix the aftereffects ... it was expensive.