Watched the video but don't really see why the title mentions pedals. This is decidedly not a pedal. A neat interface for sure, but not a pedal you can stomp.
Some pedals have a bunch of knobs which are a pain to adjust during live performance between the songs. So some pedals support changing the settings using MIDI interface. This device has builtin library of control codes fur such pedals. That way you can program presets for your MIDI controlled pedals in the storm summoner and during live performance quickly switch between presets with a click of single button as opposed to remember which of the half dozen pedals need to be stomped on/off for each song or worse adjusting the knobs.
All without a DAW too I'm guessing? I use an FCB-1010 for a lot of things but yeah it's obviously pretty useless without a DAW.