I can't argue with this because I literally cannot understand what is being said here.
Sorry, english is not my native language.
What does "he would left it for at least a few years and use new UI" mean?
Let me try again.
Toady uses now UI that we all know and (don't) love. Let's call it Current UI.
When he adds new features that need interfacing with user, he uses various already existing Current UI components, or maybe modifying them slightly for less typical needs. There is no "constant overhaul" (whatever that means).
Now let's say at some moment Toady says "Let's do better UI!"* And he does as he said. Let's call it New UI.
After that one-time overhaul, Toady uses New UI.
When he adds new features that need interfacing with user, he uses various already existing New UI components, or maybe modifying them slightly for less typical needs. There is no "constant overhaul" (whatever that means).
I hope I am understandable now. "Constant overhaul" is made up concern.
...Maybe he means he would create a new UI after a few years? But wouldn't that just waste the work that would be put into creating a new UI?
"Waste"? You would have few years of better user experience already.
I do not see problem with that because
everything in DF is in this state of flux already. Basically everything you see and have will be rewritten more than once in next 20 years. For that reason criticising UI changes on this basis is very unfair.
* Yes, will not happen. Entire discussion is academic excercise.