Well, not necessarily. Some of the punt rushes are more complex than defensive blitzes. Some of the protections can be very tricky. Is actually kicking a punt complex? well yes and no, but your punter and protection all have to be on the same page. Some protections require a get off of 1.9 seconds, some 2.1, depending on what they show (Return look or rush look).
Also punter and coverage needs to be on same page, obviously. Kick right, left. But full rush and usually don't call a direction. and that needs to be communicated effectively based on look.
Dom drove the ball decently this year, but didn't really grow in terms of directional punting, or hang time. and leg fatigue? If that's a real thing, maybe he was mismanaged in practice.
Sheier was also TE coach and it was Serigne's worst year. Some of that definitely because of injury.
Correct me if I'm wrong, we had zero game changing returns, blocked punts? Sometimes you don't want your special teams to lose it for you, but they certainly didn't help winning any game.