Look - if you want to stay a career federal employee, you're fine. No need for gratuitous brownnosing. Good leaders will respect your skills and use your talent to their own advantage. Bad leaders will feel threatened by it, but there is a limited amount they can do to you.
If you want promotions, you're a 15, so promotions will likely have to at least be approved by politicals. If you want to be SES, that may require some of the same, but also getting by the review. If your agency has a leadership training program, or similar to prepare people looking for SES jobs, do that.
But in terms of "getting excited" about it, I dunno. in theory you do it to both better your own position and to further agency priorities. Everything goes smoother and the boss is more susceptible to persuasion if they know that you're on their side. if you're not on the boss's side and don't want to be, screw it. you're a career employee and it sounds like you're good at your job. that's all that should be required.