Yeah, I'm sure you would. The point still stands, a Logia user doesn't automatically lose their durability when they consume their fruit, it takes time.
No it's not. Borsalino, Akainu and Kuzan are Admirals, all displaying great strength. Even while ailing, Whitebeard still had his immense strength at his disposal. Being able to hold down his Bisento is a feat of great strength. It's not the same as Crocodile swinging his hook at Mihawk for several reasons: 1.) It was one brief clash 2.)Crocodile's hook is extremely strong
Borsalino and Sakuzuki were capable of keeping down Whitebeard's bisento using just their legs, not any weapons, just their leg, for longer than Crocodile and Mihawk clashed.
Borsalino was kicked through a building by Marco yes, but that's another testament to Borsalino's durability.
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Kicked through a building by a Haki blow, no scratches or damage whatsoever. That's durability.