[waboremo]

Don't believe that was worth saying twice quite frankly you're the only one trying to redefine "improvement".

Here's a very simple non-UI example for you. You have learned to cut an onion one way. It takes 5 minutes to cut it that way. Someone else comes along and tells you that you can cut it this other way, and now the process only takes 30 seconds. Is there some learning here? Yes. Are you suddenly incapable of cutting onions or are no longer an expert in cooking just because you learned a faster way? Absolutely not. But overall it is an improvement including any learning process.

Existing customers who remain stagnant because they are terrified of any change are customers who eventually leave when they're marketed to by someone else. It's truly that simple.

Don't get it wrong, this isn't an argument in favor of mindless UI changes (and frankly Thunderbird's changes are garbage) as bad UI updates do exist and should be argued against, but this idea that improvement doesn't matter is so beyond absurd!