Is it common to not use chords in popular EDM?

Just finished watching Gigi’s tutorial “How to make banging electro house” and was surprised to see he didnt use any chords at all.br
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I understand the arp he hand programmed might be following a pre planned chord progression pattern but I didnt stop to study it so I’m not sure.br
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I was kind of half asleep watching it so maybe I missed a video or wasn’t really paying attention close enough. But from what I remember all he has is bass, somewhat of a melody, and the arp. br
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Ive always learnt chords are what you base the rest of the track pieces that you compose off of. So without chords(whether I use them in the finished product or not) I’m kind of lost on what to create next, etc…unless I have a finished piece in mind, which isn’t always the case.

I haven’t watched it but consider that an arp is, by definition, a chord.br
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-r