Maybe looking cool and memorable is the point.

Even as a mage, he never one-shotted me. Either you were underleveled or you had no health.

Not sure what you mean by root

But i found it confusing at first, but actually he has a basic set of attacks he do just gotta have your eyes keen to see them

nah fam, he scared of bath cuz he got mad rabies

I���ve had a harder time with all of those bosses (besides Greyll) than Radahn.

Well what do you expect from a 'boss' that can't afford a decent meal let alone a horse that doesn't make him look ridiculous as he rides around stuck in a sand litter box like a cat in prison? Dude is broke!

And here people complain that he was better pre-patch despite this.

Amen. You only have to read what they patched to know pre-nerf Radahn isn't anything you should want back. The only significant changes are to his purple arrows and his hitboxes. The purple arrows were so the run back isn't as tedious and you can just Torrent up to him (not like they're hard to roll through) and his hitboxes accurately match his weapon model currently so obviously they were way too big before.
If people want him as a challenge try RL1 no summons. One of the best designed bosses in the game imo, and it shows on challenge runs.

I don't think so. The festival NPCs feel almost required for the fight, so I doubt they increase his HP or damage. If I'm not mistaken, NPC summons don't buff bosses, only summoning other playerd does.

They are not at all required for the fight haha, it’s just a fun way to make it possible at a lower level while still requiring you to learn his moveset a bit and get damage on him

If you fight him solo, he probably will seem less erratic because he isn’t focused on multiple enemies and swinging around.