Fast track to loss of respect:

I visit a site/launch the app I always use with the intent of getting something done quickly, and I find that since the last time I used it someone's rearranged the deck chairs and hidden or removed the functionality I need. Something that should take a minute or two suddenly becomes rage-inducing and eats an entire day.

Or the feature is still there but they've renamed it to something totally unrelated which you would never guess. Honestly, it's like they are actively trying to lose users.

The most depressing email to receive is "Good news! We've improved our website ..."