On German humour, no laughing matter ...
Dave, I have one, I know it's a functional bass! But mine has bass strings and is tuned like a bass. But the guy in the vid has the bass tuned like a baritone guitar (lowest note A or even B, fifth string tuned to E or F#, ie guitar tuning, four and not five half-steps higher). Consequently, he plays it like a guitar.
Which he is fine to do, but it's not playing bass with an EB-6, it's not what Jack Bruce did with a Danelectro six-string. I was - jokingly, as I had hoped would be recognized - alluding to that "misappropriation" of an EB-6. But when the EB-6 came out, it was of course meant to be used both ways. And they probably saw more use with baritone strings and guitar tuning than as basses. No matter what you do, the two additional strings don't sound much like a bass anymore, they have a guitarish twang to them even in bass tuning.
Sigh, more "bass playing" here: