Djent (which I hadn’t heard of coz I don’t get out much…
… oh hang on, it’s the onomatopoeia! Djent djent djent. OK, carry on…
) could be a verb, sure. It’s English, we do that. We had a DJ here (the famous Molly Meldrum ) get in legal trouble 30 years ago, because he said to someone “if you want to funk, funk outside”, and someone misheard him.
But making it an *irregular* verb is just being perverse. Irregular verbs are irregular for historical reasons, and analogy. If you make a new verb, there will be little linguistic motivation to make it irregular; people will just assume it is regular.
Geeks used to make the plural of VAX vaxen in the 70s. But they were smartass geeks, making a point. Are metalheads smartass geeks?