Ironically enough, the same sad story can be made for Joker. He's not as strong as the Birdcage itself, yet he's able to create it. So, his power is as fake as Gear 4th.
The Clash of haki was to prove he was superior and they stalemated. Not an assumption,a fact. If there was a victor in that clash, someone would have lost at that moment like we see against Chinjao and Pica.
This is clearly what you must think since neither Enel or Smoker have Armament haki; your claime is somewhat baseless and unscientific. What makes you think Electricity affects Smoke, you're the one making claims with no research, just doubts based on nothing.
- Yeah Enel realized his electricity couldn't hurt Luffy and resorted to use melee attacks, you call adapting arrogant?
- Enel used Raijin which he created with the aid of his ship, you call that arrogance?
Poor excuses, he fought to the best of his potential or he'd never have gone all out as he did. If Enel were truly arrogant, he'd never have stopped attacking or acknowledging that his Electric attacks were rendered useless; if anything, it motivates the one to fight to their full or best potential.
It seems what you're unable to understand is that the concept of fighting with a superiority complex doesn't mean understimating the opponent.
As can be mostly said in your case; mostly biased and lacks substance.