Uberwaltz,
Vinyl has pretty much been an obsolete technology my entire life. If a music store carried it, they'd have maybe 30 or 40 albums in the back corner. Good old fashion tape is what I grew up listening to. I'm quite sure I've never heard a vinyl record broadcast on radio. I like tape.
Having grown up in an era where vinyl basically didn't exist, terms like LP, EP, and Single most certainly persisted completely independent of the recording medium. I've bought plenty of LP, EP's, and singles on tape and CD. Those are the ONLY ways I've ever bought hardcopy music. I don't think anybody 40 years old or younger associates LP, EP, or Single with the diameter of a piece of plastic. Calling anything that comes on a disk of vinyl an LP strikes me as having the same logic as calling my HP printer/scanner/copier a Xerox machine. It's an antiquated misuse of terminology that dates the user to a generation born before about 1970.