Enma is Oden's sword and keepsake for his children. Of course non of the Scabbards would stoop so low to taking Oden's sword when each has his own nor would they do that given their awe, love and respect for the man.
But no Zoro, he's the guy who needs to upgrade swords so as to be able to match the very best Samurai of Wano. How convenient he gets a legendary sword used by the legendary Oden.
So, Oda dropping the line "the only man to tame Enma was Kozuki Oden" means nothing because according to you, nobody else tried?

Lmao, what are you talking about? Zoro needs to upgrade the swords? No. He needed a replacement for kokuto Shusui that was taken away from him.
Sorry but I think that comparing Mr. 1 durability to Kaido and Big Mom is a stretch.
Mr. 1 is not durable by One Piece standards.
All CP9 members can use Tekkai, which make their bodies as hard as steel, right? Yet the monster trio or Franky could fight them pre-timeskip.
The Pacifistas are made of a material stronger than steel, which Zoro couldn't cut through. But after time-skip the monster trio couldn't easily destroy a Pacifista with a single blow.
We can conclude that any character that survived blows from Luffy or Sanji have more durability than Mr. 1.
Kaido or Big Mom are on a completely different level. Even Law who cut a mountain of steel (Ceasar's lab) shouldn't be able to do anything to them.
I am not comparing Mr1's body to Kaido's and BM...
CP9's Rankyaku could cut through thick steel and yet it failed to cut through Luffy and Sanji. Are Luffy and Sanji tougher than thick steel? Imagine if Luffy and Sanji additionally had Mr1's fruit...
Would BM be more durable if she ate Mr1's fruit?
You keep equating steel body of an actual character to steel objects and machines... They are worlds apart in durability. Mr1 has 4th most durable body.
Didn't Hitetsu said Zoro could do it because he was already used to a sword by the same master?
Is that that stoping Zoro's haki mastery from being on a very high level?
Also you seem to have missed out on the build up to this. Zoro could never achieve this feat by himself. He needed to be flung to the sky at great speeds hence cutting the huge golem was made possible.
Non of the spectators in that panel knew how Zoro did that hence they were all shocked seeing him get cut down.
You tend to pay zero attention to details, all you are interested in is worship the future number 2 of the StrawHats (cos currently his position as the number 2 combatant is in doubt).
Same thing with your usual go-to for durability, Zoro taking Luffy's damage. You seem to forget how messed up Zoro got to the extent that he never recovered from that until the Time Skip and this is not even counting how long he remained unconscious after that event.
Luffy on the other hand has demonic healing prowess, together with his crazy endurance.
Zoro will never surpass his captain that much is fact!
Bullshit. Zoro didnt need to be flung to be able to golem and you have already proof for that. The only thing the throw did was close the distance between Zoro and the mountain. Whatever you think it did, was nullified after first slash because Zoro landed at King's plateau and proceeded to cut him up without any effect of the throw.
I pay zero attention?

Zoro dwarfed Luffy's endurance whether you like it or not. He took all of Luffy's on top of his own while Luffy was out cold just from his own stuff.
Zoro will never surpass his captain? Mon cheri, he doesnt need to surpass him because he never stopped being above him.