I would point out that most teleporters have a distance limit and sometimes the limit of having to be able to see where they're going in their mind's eye. Like Nightcrawler, so they're limited by how far they can really go, and I would also say that in these instances, it's more of affixing themselves to a spot on the planet, like anchoring to a specific spot within the atmosphere, within their circle of teleportation, instead of very quickly moving from one place in space to another.