That’s not true at all. Mall is probably the last place anyone should go to in Dubai.
Instead of going to the Mall, you could drive a little and go view the wonderful collection at Louvre Abu Dhabi.
You could also go eat excellent sushi at the little (and cheap) 3 Fils at the local Fishing harbor in Jumeirah. There’s also a decent seafood restaurant next door run by local fishermen.
On Palm there’s the excellent Ibn AlBahr run by a group of Lebanese(?) fishermen.
Deira too is full of nice authentic places.
But sure, if you’re a mall enthusiast then a shitty mall is all you will find. If you seek out nice authentic places, they’re easy to find.