What makes textures tacky? I think this is one of those "beauty is in the eye of the beholder" kind of things. Personally, I loved all the textures as they really showed off the retina display and the incredible level of detail it could show. I'd argue that the gaudy neon colors on white backgrounds and cartoony icons found in iOS 7 are far more tacky than any linen texture ever was. But it's totally matter of personal taste.
I'll give you that some people are used to touch screen interfaces. I still don't understand why that means they suddenly don't want visual cues to help indicate how to use the OS. I have been jailbreaking iPhones since the iOS 1.1 days and even I find myself missing the buttons of iOS 6. Why? Because by removing the buttons, Apple has also decreased the surface area of many tapable UI elements. Aesthetic arguments aside (I also think the lack of buttons looks ugly), any change that makes the OS harder to use is a step backward. Period.
False. Most of the people on tech blogs and web boards like this one have been tired of the old look since 2011. Almost all of my family and friends who are not technically inclined detest the new look, some to the point where the refuse to upgrade their devices and will look at other phone brands the next time their contract is up for renewal. You can't take the opinions expressed by people who read every Apple rumor and watch every keynote as representative of all Apple customers. And you can't really take the number of people who have upgraded to iOS 7 as representative of how many people really like it since downgrading is not an option. The new features are nice. But, I imagine if you polled everyone who has upgraded and asked them if they wish they could go back to iOS 6, a sizable fraction would say yes.
You are right that interfaces do (and should) evolve. But iOS 7 is a pretty stark visual break with what has come before, and many of the UI changes just feel like they are there because Ive wanted to make it different from iOS 6. Just because something changes doesn't automatically make it better than what came before. It is true that iOS 7 is a step forward in a lot of ways. But many of the UI changes are extremely questionable.
Instead of assuming, why don't you actually
read a poll? There have been polls here, and elsewhere on the net. Why don't you read them? Why do you have to assume?
iOS 7 is definitely not 100%, but it's a
lot better than iOS 6. My family prefers iOS 7 to 6, so I'll agree that beauty is in the eyes of the beholder. But textures and ornaments have their novelty wear out pretty quickly, and it'll just be mainly functionality and content which is what matters. That's where iOS 7 shines. There's enhanced typography and more efficient ways of interacting with content.
It's stark, but it's not static. The toolbars, menus, status bars, and more stuff always change based on the content beneath them. The z-dimension is no longer expressed using static shadows, but rather dynamically moving elements that respond to motion. This helps keep the user in the context of what he's doing, and doesn't disrupt what he's doing as well.
There will definitely be people who hate the change, as you've pointed out. But there are people who
wanted the change. This change is basically the progression of touch interfaces. Before we needed textures and metaphors because interacting with a pane of glass was new to most. And textures also clouded the low dpi displays. But that has changed: smartphones are now extremely popular and pixel sizes have reduced by more than half.
An example of why a company shouldn't bet on the past is blackberry. There were people who swore by physical keyboards, so blackberry remained with them and didn't embrace touch interfaces until much later on. Now look at their state and tell me how they are. They catered for the past, and tried to service those people, and now they're in a dire state. Do you want that to happen to Apple?