The end of an era

Soooo, the Oxford Dictionary has decided to remove "cassette tape" from the dictionary. Does this mean this is no longer a thing? That these are no longer words when put together? What's next, Pluto?

Yeah, cassette tapes are outdated (i still use a VCR to tape my soaps so i can totally see my self using a cassette tape), but just because something is outdated, should it automatically get the boot? Maybe. Maybe not. It sad enough that the younger generations won't know the sweet pleasures of listening to KJ 103 all day just so you can press Play Record when they FINALLY play your jam (it always ticked me off when the DJ would be talking during the song. I wanna hear Boyz II Men, not TJ and Tooker).

What i find funny is Oxford is axing cassette tape, but is adding: woot, jeggings and mankini.
Ok, i'll give them "woot" because I say it all the time. But Jeggings and Mankini? These things should have never been invented let alone acknowledged enough to be put in the dictionary. And what happens when they (hopefully soon) go out of style? Will Oxford remove them and replace them with the next terrible fad only worn by the Jonas Brothers?

I'm curious if Oxford lists the definition of "dictionary" because those are way more outdated than cassette tapes.