Oh, I let my fingers did some walking and found out what the 'bad publicity' is about!! LOL!
Some troll went to stir flames by posting up a photo of a Diamond Walker shoe with the intention to get negative comments... can see its an obvious attack.

(That shoe actually looks nice, IMO. Saw before on their facebook and apparently the leather is so popular it was sold out quite fast. *shrug* So one man's meat is another's poison perhaps).
Anyway... a little digging will show a few individuals seriously doing nothing but attacking Diamond Walker and somehow, ahem, promoting a local shoemaker or some very expensive bespoke brands only. Ahem. All around the same period. And they talk the same way too. Eg. they use words like elite, celebrity (perhaps a dig at Diamond Walker's many Korean and local celebs wearing Diamond Walkers) in their attack postings. You put one and one together and you get the full picture.

Sounds like low-class thuggish tactics by competitors if you ask me.
Seriously some people should get a life but haters gotta hate. *shrug*
Class cannot be bought even if you wear the nicest suit or wear $6000 bespoke shoes.