True, though this doesn’t cover whether you’d feel the effects of the teleportation, or I guess also how fast you could teleport. Teleporting through air is probably not crazy, but if only every atom of you teleports into solid steel or rock, you’ll basically be stuck for as long as your brain takes to process the next teleportation. If you don’t do it with a full breath you can’t breath in, your hairs might get stuck from tiny muscle movements, if your eyes are open, they are now just touching rock or steel, I think it would require some practice to know the right like “body preparation” to do without harming yourself.