The problem is twofold. One, the series sucks. Two, as with so many things, the discourse around the series has gotten cluttered with parroted jokes and ideas from people who haven't actually watched it and whose commentary is performatively marching along with the understood accepted fandom stance, rather than in their own personal experience with and resulting distaste for the material. So the descriptions get inflated and clouded via the decades-long-now game of telephone of repeating jokes from the wiki and from influencers and from social media. It's basically the melodrama over Kiss Players, but applied to how bad Energon is and in what way.
Energon not even particularly bonkers or entertainingly bad, despite the aforementioned discourse -- it's tedious. It is very hard to even make it funny.
And even rewatching that Nemesis Prime clip from Armada -- a less terrible show -- reminded me that I just could not with the sheer anime cadence of it. Even a better dub would have precious little to work with in those scenes: long stretches pass without anyone actually talking, and when they do, it's a few syllables of mouth-flap. The camera lingers on Nemesis Prime for long stretches, during which all he has is animalistic growls and the occasional evil laugh and/or roar. It takes a long time for anyone to do anything; it's like they're fighting underwater. And this is an action scene, which is meant to be exciting and dramatic.
And, again, that was Armada. Energon is more of the same style, but with writers who seem to have just given up and played mad libs with "You serious?" and "Uhhh?!". Even the good parts (again, put on higher and higher pedestals until one actually rewatches them and recalibrates that expectation to This Was Okay, It Wasn't Gibberish Yet) were hampered by the dub format and the writing. (The music isn't always a great fit either; the score is oddly incongruous with the tense "I am your enemy now; fire on me" standoff of Demolishor facing the returned Megatron.)