Brennnin
"Teleportation" at a quantum level has been witnessed in laboratory settings. As the scientists quickly pointed out, that doesn't mean jack as far as practical teleportation- but they also said it couldn't be ruled out. That is, what they observed at a quantum level may not be replicable at a macro scale, but that it also isn't ruled out.
Remember E=M(cxc)? Energy and Mass are interchangeable. The fusion processes and byproducts that happen in the heart of a star indicate that you can start of with a simple atom-Hydrogen- and muck with it until it becomes whatever you want- Helium, Iron, high-energy plasma, etc. We just don't know how to control the process...without blowing something up.
Just because someone can dream up something that is remotely scientific does not mean it will come to pass, so the distinction you are arguing for is useless
I think there is a definite qualitative difference between something that is remotely possible as opposed to something that has been proven to be impossible or to never have happened. The possibility that humankind will invent some kind of FTL is remote. The possibility that a human ever fought a flying firebreathing dragon is ZERO.
That said- I have no problem with your not liking Psionics- I don't use that as my criterion for enjoying a campaign. If I did, I'd have given up on this hobby YEARS ago.
Its just that with my PERSONAL love of them, as opposed to the psi-hate I keep running into, I was puzzled as to the REAL state of the hobby. In other words, was I in the minority or the majority?
I believe I have my answer- I'm just having a 28year long streak of bad luck!