Gee-whillikers! I don't have a looper sitting with my modular, so I guess I'm just not hip and with it anymore.
Bollocks. OK, let's dig into what's going on here...
Why look, he's using a little skiff, so those must be the way to go...right? So...look more carefully, and you'll notice a couple of stompboxes, some additional things (including an Apex tile...uncased, far right) and the RC-505. Said RC-505 also has internal FX, too. So the synth isn't exactly doing what it's capable of alone. The patch is also difficult to sort out, mainly due to slinging patch cables all over the place so that you (and quite possibly, the presenter) can't really tell how things are routed.
Also, one of the links in the "more videos" bar shows the same little Intellijel skiff used for...generative? Maybe so, but probably not. Generative patches are ones which have a LOT of crossmodulation and internal patch alteration in order to generate non-repeating patterns across SEVERAL voices so that the synth is spinning out a sonic result that is in constant flux. Doing this in a tiny skiff is just not going to cut it; it would be the equivalent of hooking up a noise source to a sample and hold to a VCO and saying that that was "generative".
And therein lies another problem. If there was sufficient space in that Palette, the YouTuber would do FAR BETTER by fitting a Bitbox, Squid Salmple, STS, GXN, Rample, and so on into the cab because those can be directly controlled/modulated by sources within the build itself. But there's NOT...so we get to deal with a big, clunky Boss box that takes up about as much space as...
...wait for it...
...another Eurorack case. WHYYYYYYYYY!?!?!?!?!
OK, I'll calm down. But also, the thumbnail for this YT clips screams "clickbait", and that alone should be sufficient warning. If someone on YT has something SUBSTANTIAL to post, they won't need clickbait to get attention for it. When I talk about NOT paying attention to YouTube for your information...this sort of thing is PRECISELY what I'm talking about.