Yes this is a good point. It is a hassle though if Tesla decides to dig their heels in and deny coverage.Remotely related doesn't cut it. The onus is 100% on the manufacturer to prove that the modifications that you added directly caused the part failure that they're denying warranty coverage on. The Magnuson-Moss act is very clear in this regard. If you tint your windows they can't deny warranty coverage on a brake caliper defect. However, if you change out your suspension they could potentially deny warranty coverage on a related suspension component like a control arm or similar.
The primary issue when the conversation of factory warranty comes up is that most people don't even realize that they have rights in this regard. When some desk jockey at a service center tells them they're not covering the warranty they slink out the door with their tail between their legs assuming that's the gospel word of Tesla. The reality is it's just some lackey that doesn't know how to do their job. This is evidenced by the dozens of posts every day on this forum alone citing some Tesla employee giving misinformation as fact because of poor training/knowledge.
It's important to understand that replacing factory parts with aftermarket parts could potentially void portions of the warranty so long as they're related. Equally important is to understand that you've got specific protections in this regard and it's important to know how the law protects you from manufacturers blatantly claiming your modification caused and unrelated parts failure.
One thing I would be concerned about in particular is changing ride height. I would certainly consider aftermarket suspension at stock ride height as I think the risk would be minimized.