Why "smashed avocado" rather than "mashed avocado"?

In the context of gastronomy, what is the difference, if any, between "smashed" and "mashed"? I'm familiar with "mashed" being used, such as in "mashed potato", but hadn't heard of "smashed" being used this way, until "smashed avocado" become a buzzword for young people spending too much money rather than saving up for a house:

I have seen young people order smashed avocado with crumbled feta on five-grain toasted bread at $22 a pop and more. I can afford to eat this for lunch because I am middle-aged and have raised my family. But how can young people afford to eat like this? Shouldn’t they be economising by eating at home? How often are they eating out? Twenty-two dollars several times a week could go towards a deposit on a house.

I think that smash and mash suggests that avocado has been prepared in a different way, for instance:

"Mashed" potatoes are smoothly whipped with cream, butter, etc. "Smashed" potatoes, are more with pieces of chunk potato as well as smooth bits. There's still butter or whatever but again it's not smoothly incorporated.

The Free Dictionary

Smashed avocado From: (www.self.com)

Mashed avocado From: (www.gettyimages.co.nz)