Well, leaving aside that a 'dorse' would probably be a hinny rather than a mule....

Creating a portmanteau is a longstanding way of making a proper new word. You probably even use them all the time.

You've probably watched more than a few newscasts, perhaps even one that had a story about a soundscape, (if you did it on your phone, you might have even been riding an escalator at the time). More than a few times, the stories would have likely mentioned smog, motorcades, napalm or paratroopers.

UF has included arcologies and all sorts of things with avionics, not to mention all kinds of brainiacs.

Reading the right kind of stuff can easily result in the release of endorphins<1>, which might be nice if you have just been reading up on how your party lost the election because of gerrymandering.

I'm sorry if this comes across as a bit snarky, but you can at least know that I'm seeing a lot of words with squiggles under them.

(Including the footnote: That's what, 15 of them? Oh, wait: 16)

<1> Or you could get it through some possibly illegal activities in a motel.